A023021 - OEIS

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

A023021 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`23`
`2`		`299`
`3`		`2852`
`4`		`22126`
`5`		`147407`
`6`		`871838`
`7`		`4680845`
`8`		`23177583`
`9`		`107100903`
`10`		`466066181`
`11`		`1923780950`
`12`		`7576060505`
`13`		`28601630657`
`14`		`103928814438`
`15`		`364712523658`
`16`		`1239637963457`
`17`		`4091266414235`
`18`		`13139808783725`
`19`		`41145568478988`
`20`		`125833948024603`
`21`		`376417734772625`
`22`		`1102878148698235`

[1,23,299,2852,22126,147407,871838,4680845, 23177583,107100903,466066181,1923780950, 7576060505,28601630657,103928814438,364712523658, 1239637963457,4091266414235,13139808783725, 41145568478988,125833948024603,376417734772625, 1102878148698235]

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 8 00:14 EDT 2024. Contains 374148 sequences. (Running on oeis4.)