A007028 - OEIS

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A007028 as a simple table

`n`		`a(n)`
`8`		`1`
`9`		`0`
`10`		`1`
`11`		`1`
`12`		`5`
`13`		`5`
`14`		`21`
`15`		`40`
`16`		`176`
`17`		`500`
`18`		`2053`
`19`		`7532`
`20`		`31206`
`21`		`124552`
`22`		`521332`
`23`		`2167599`
`24`		`9183879`
`25`		`38965327`
`26`		`166956753`
`27`		`718004565`
`28`		`3107450143`
`29`		`13502835176`
`30`		`58956369552`
`31`		`258398671525`

[1,0,1,1,5,5,21,40,176,500,2053,7532,31206,124552, 521332,2167599,9183879,38965327,166956753, 718004565,3107450143,13502835176,58956369552, 258398671525]

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Last modified September 14 06:54 EDT 2024. Contains 375920 sequences. (Running on oeis4.)