A227293 - OEIS

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A227293 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`-2`
`3`		`4`
`4`		`-2`
`5`		`12`
`6`		`-36`
`7`		`104`
`8`		`-330`
`9`		`1068`
`10`		`-3356`
`11`		`10808`
`12`		`-35156`
`13`		`115192`
`14`		`-380744`
`15`		`1267152`
`16`		`-4242778`
`17`		`14285644`
`18`		`-48336684`
`19`		`164272984`
`20`		`-560515836`
`21`		`1919455464`
`22`		`-6594719992`
`23`		`22725877680`
`24`		`-78531331524`
`25`		`272062125048`
`26`		`-944738639640`
`27`		`3287748182064`
`28`		`-11464667424744`
`29`		`40053463412080`
`30`		`-140178051713680`
`31`		`491396601445280`

[1,2,-2,4,-2,12,-36,104,-330,1068,-3356,10808, -35156,115192,-380744,1267152,-4242778,14285644, -48336684,164272984,-560515836,1919455464, -6594719992,22725877680,-78531331524,272062125048, -944738639640,3287748182064,-11464667424744, 40053463412080,-140178051713680,491396601445280]

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Last modified April 19 02:12 EDT 2024. Contains 371782 sequences. (Running on oeis4.)