A013580 - OEIS

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A013580 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`3`
`5`		`1`
`6`		`1`
`7`		`4`
`8`		`4`
`9`		`1`
`10`		`1`
`11`		`5`
`12`		`9`
`13`		`5`
`14`		`1`
`15`		`1`
`16`		`6`
`17`		`14`
`18`		`14`
`19`		`6`
`20`		`1`
`21`		`1`
`22`		`7`
`23`		`20`
`24`		`29`
`25`		`20`
`26`		`7`
`27`		`1`
`28`		`1`
`29`		`8`
`30`		`27`
`31`		`49`
`32`		`49`
`33`		`27`
`34`		`8`
`35`		`1`
`36`		`1`
`37`		`9`
`38`		`35`
`39`		`76`
`40`		`99`
`41`		`76`
`42`		`35`
`43`		`9`
`44`		`1`
`45`		`1`
`46`		`10`
`47`		`44`
`48`		`111`
`49`		`175`
`50`		`175`
`51`		`111`
`52`		`44`
`53`		`10`
`54`		`1`
`55`		`1`
`56`		`11`
`57`		`54`
`58`		`155`
`59`		`286`
`60`		`351`
`61`		`286`
`62`		`155`
`63`		`54`
`64`		`11`
`65`		`1`
`66`		`1`
`67`		`12`
`68`		`65`
`69`		`209`
`70`		`441`
`71`		`637`
`72`		`637`
`73`		`441`
`74`		`209`
`75`		`65`

[1,1,1,1,3,1,1,4,4,1,1,5,9,5,1,1,6,14,14,6,1,1,7, 20,29,20,7,1,1,8,27,49,49,27,8,1,1,9,35,76,99,76, 35,9,1,1,10,44,111,175,175,111,44,10,1,1,11,54, 155,286,351,286,155,54,11,1,1,12,65,209,441,637, 637,441,209,65]

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Last modified April 23 10:29 EDT 2024. Contains 371905 sequences. (Running on oeis4.)