document.write( "Question 1210386: 1, 2, 0, 3, -1, 4, -2
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Algebra.Com's Answer #852151 by mccravyedwin(407)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "Here is another general formula:\r\n" );
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document.write( "\"a%5Bn%5D=5%2F4%2B%28-1%29%5En%2A%28%282n-1%29%2F4%29\"\r\n" );
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document.write( "(You can simplify that if you like, but about all you can do is factor out \"1%2F4\".\r\n" );
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document.write( "How I got the 2nd solution was to find the average of the two solutions for even\r\n" );
document.write( "and odd terms in my first answer above to be \"5%2F4\". Then I found the\r\n" );
document.write( "common distance from the average for each solution to be \"%282n-1%29%2F4\". Then I\r\n" );
document.write( "knew that this common distance gets added to the average when \"%28-1%29%5En\" is +1,\r\n" );
document.write( "and this common distance gets subtracted from the average when \"%28-1%29%5En\" is -1.\r\n" );
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document.write( "Edwin
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