document.write( "Question 1011947: What are next two terms of sequence:
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Algebra.Com's Answer #627953 by Edwin McCravy(20056) $\"\"$ $\"About$
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-1,2,12,40,.......
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document.write( "We find a recursion formula of the form:\r\n" );
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document.write( ", where  and \r\n" );
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document.write( "and where p and q are constants:\r\n" );
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document.write( "(1)   \r\n" );
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document.write( "Divide through by 2\r\n" );
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document.write( "(2)   \r\n" );
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document.write( "Solve the system of equations (1) and (2)\r\n" );
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document.write( "Add the two equations:\r\n" );
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document.write( "substitute in (1)\r\n" );
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document.write( "(1)   \r\n" );
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document.write( "So the recursion formula is\r\n" );
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document.write( " , where  and \r\n" );
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document.write( "becomes\r\n" );
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document.write( ", where  and \r\n" );
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document.write( "or\r\n" );
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document.write( ", where  and  \r\n" );
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document.write( "Substitute n=1 as a check\r\n" );
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document.write( "Substitute n=2 as a check\r\n" );
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document.write( "Substitute n=3:\r\n" );
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document.write( "Substitute n=4\r\n" );
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document.write( "So the sequence goes:\r\n" );
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document.write( "-1,2,12,40,112,288,704,1664,3840,8704,.......\r\n" );
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document.write( "Edwin
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