document.write( "Question 1024880: Hello, I would to ask the general formula of the sequence:
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Algebra.Com's Answer #640243 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "(-1)^(int((n-1)/4)+int((n+1)/4))\r\n" );
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document.write( "where int(x) = the greatest integer not exceeding x.\r\n" );
document.write( "This function is often denoted floor(x).\r\n" );
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document.write( "So it could be written\r\n" );
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document.write( "(-1)^(floor((n-1)/4)+floor((n+1)/4))\r\n" );
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document.write( "Texas Instrument calculators use int(x).\r\n" );
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document.write( "Edwin
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