A128730 - OEIS

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

A128730 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`1`
`3`		`4`
`4`		`16`
`5`		`68`
`6`		`301`
`7`		`1366`
`8`		`6301`
`9`		`29400`
`10`		`138355`
`11`		`655424`
`12`		`3121438`
`13`		`14930540`
`14`		`71675839`
`15`		`345148892`
`16`		`1666432816`
`17`		`8064278288`
`18`		`39103576699`
`19`		`189949958332`
`20`		`924163714216`
`21`		`4502711570988`
`22`		`21966152501239`
`23`		`107284324830302`

[0,0,1,4,16,68,301,1366,6301,29400,138355,655424, 3121438,14930540,71675839,345148892,1666432816, 8064278288,39103576699,189949958332,924163714216, 4502711570988,21966152501239,107284324830302]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 23 02:53 EDT 2024. Contains 371906 sequences. (Running on oeis4.)