A171661 - OEIS

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A171661 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`2`
`3`		`6`
`4`		`6`
`5`		`4`
`6`		`20`
`7`		`20`
`8`		`14`
`9`		`8`
`10`		`70`
`11`		`70`
`12`		`50`
`13`		`30`
`14`		`16`
`15`		`252`
`16`		`252`
`17`		`182`
`18`		`112`
`19`		`62`
`20`		`32`
`21`		`924`
`22`		`924`
`23`		`672`
`24`		`420`
`25`		`238`
`26`		`126`
`27`		`64`
`28`		`3432`
`29`		`3432`
`30`		`2508`
`31`		`1584`
`32`		`912`
`33`		`492`
`34`		`254`
`35`		`128`
`36`		`12870`
`37`		`12870`
`38`		`9438`
`39`		`6006`
`40`		`3498`
`41`		`1914`
`42`		`1002`
`43`		`510`
`44`		`256`
`45`		`48620`
`46`		`48620`
`47`		`35750`
`48`		`22880`
`49`		`13442`
`50`		`7436`

[1,2,2,6,6,4,20,20,14,8,70,70,50,30,16,252,252, 182,112,62,32,924,924,672,420,238,126,64,3432, 3432,2508,1584,912,492,254,128,12870,12870,9438, 6006,3498,1914,1002,510,256,48620,48620,35750, 22880,13442,7436]

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Last modified September 14 03:39 EDT 2024. Contains 375911 sequences. (Running on oeis4.)