A033140 - OEIS

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A033140 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`16`
`4`		`65`
`5`		`260`
`6`		`1040`
`7`		`4161`
`8`		`16644`
`9`		`66576`
`10`		`266305`
`11`		`1065220`
`12`		`4260880`
`13`		`17043521`
`14`		`68174084`
`15`		`272696336`
`16`		`1090785345`
`17`		`4363141380`
`18`		`17452565520`
`19`		`69810262081`
`20`		`279241048324`
`21`		`1116964193296`
`22`		`4467856773185`
`23`		`17871427092740`
`24`		`71485708370960`

[1,4,16,65,260,1040,4161,16644,66576,266305, 1065220,4260880,17043521,68174084,272696336, 1090785345,4363141380,17452565520,69810262081, 279241048324,1116964193296,4467856773185, 17871427092740,71485708370960]

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Last modified April 19 16:38 EDT 2024. Contains 371794 sequences. (Running on oeis4.)