A166455 - OEIS

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A166455 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`4`
`5`		`1`
`6`		`1`
`7`		`5`
`8`		`5`
`9`		`1`
`10`		`1`
`11`		`8`
`12`		`12`
`13`		`8`
`14`		`1`
`15`		`1`
`16`		`9`
`17`		`20`
`18`		`20`
`19`		`9`
`20`		`1`
`21`		`1`
`22`		`12`
`23`		`29`
`24`		`40`
`25`		`29`
`26`		`12`
`27`		`1`
`28`		`1`
`29`		`13`
`30`		`41`
`31`		`69`
`32`		`69`
`33`		`41`
`34`		`13`
`35`		`1`
`36`		`1`
`37`		`16`
`38`		`56`
`39`		`112`
`40`		`140`
`41`		`112`
`42`		`56`
`43`		`16`
`44`		`1`
`45`		`1`
`46`		`17`
`47`		`72`
`48`		`168`
`49`		`252`
`50`		`252`
`51`		`168`
`52`		`72`
`53`		`17`
`54`		`1`
`55`		`1`
`56`		`20`
`57`		`89`
`58`		`240`
`59`		`420`
`60`		`504`
`61`		`420`
`62`		`240`
`63`		`89`
`64`		`20`
`65`		`1`
`66`		`1`
`67`		`21`
`68`		`109`
`69`		`329`
`70`		`660`
`71`		`924`
`72`		`924`
`73`		`660`
`74`		`329`
`75`		`109`
`76`		`21`
`77`		`1`

[1,1,1,1,4,1,1,5,5,1,1,8,12,8,1,1,9,20,20,9,1,1, 12,29,40,29,12,1,1,13,41,69,69,41,13,1,1,16,56, 112,140,112,56,16,1,1,17,72,168,252,252,168,72,17, 1,1,20,89,240,420,504,420,240,89,20,1,1,21,109, 329,660,924,924,660,329,109,21,1]

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Last modified April 19 02:28 EDT 2024. Contains 371782 sequences. (Running on oeis4.)