A030981 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A030981 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`4`
`4`		`11`
`5`		`41`
`6`		`146`
`7`		`564`
`8`		`2199`
`9`		`8835`
`10`		`35989`
`11`		`148912`
`12`		`623008`
`13`		`2633148`
`14`		`11222160`
`15`		`48181056`
`16`		`208180847`
`17`		`904593623`
`18`		`3950338043`
`19`		`17328256180`
`20`		`76316518987`
`21`		`337332601513`
`22`		`1495992837550`
`23`		`6654367576732`
`24`		`29681131861564`

[1,1,4,11,41,146,564,2199,8835,35989,148912, 623008,2633148,11222160,48181056,208180847, 904593623,3950338043,17328256180,76316518987, 337332601513,1495992837550,6654367576732, 29681131861564]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 10:38 EDT 2024. Contains 371791 sequences. (Running on oeis4.)