A005656 - OEIS

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A005656 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`1`
`4`		`3`
`5`		`12`
`6`		`44`
`7`		`170`
`8`		`651`
`9`		`2520`
`10`		`9752`
`11`		`37854`
`12`		`147070`
`13`		`572264`
`14`		`2229096`
`15`		`8692788`
`16`		`33933459`
`17`		`132594480`
`18`		`518584880`
`19`		`2029976630`
`20`		`7952706234`
`21`		`31179618184`
`22`		`122331419080`
`23`		`480283635468`
`24`		`1886828198398`

[0,0,1,3,12,44,170,651,2520,9752,37854,147070, 572264,2229096,8692788,33933459,132594480, 518584880,2029976630,7952706234,31179618184, 122331419080,480283635468,1886828198398]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)