document.write( "Question 853634: What is the rule for -5, 9, -13, 17,...? \n" ); document.write( "

Algebra.Com's Answer #514191 by KMST(5328) $\"\"$ $\"About$

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$\"highlight%28a%5Bn%5D=%28-1%29%5En%2A%281%2B4n%29%29\"$
\n" ); document.write( " $\"a%5B1%5D=%28-1%29%5E1%2A%281%2B4%2A1%29=-1%2A5=-5\"$
\n" ); document.write( " $\"a%5B2%5D=%28-1%29%5E2%2A%281%2B4%2A2%29=1%2A9=9\"$
\n" ); document.write( " $\"a%5B3%5D=%28-1%29%5E3%2A%281%2B4%2A3%29=-1%2A13=-13\"$
\n" ); document.write( " $\"a%5B4%5D=%28-1%29%5E4%2A%281%2B4%2A4%29=1%2A17=17\"$ \n" ); document.write( "

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