A026030 - OEIS

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A026030 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`15`
`4`		`56`
`5`		`209`
`6`		`780`
`7`		`2912`
`8`		`10880`
`9`		`40698`
`10`		`152456`
`11`		`572033`
`12`		`2150040`
`13`		`8095425`
`14`		`30535260`
`15`		`115377660`
`16`		`436698240`
`17`		`1655607390`
`18`		`6286707000`
`19`		`23908446510`
`20`		`91057063344`
`21`		`347281885818`
`22`		`1326262602104`
`23`		`5071418015120`
`24`		`19415851639296`
`25`		`74419447792340`

[1,4,15,56,209,780,2912,10880,40698,152456,572033, 2150040,8095425,30535260,115377660,436698240, 1655607390,6286707000,23908446510,91057063344, 347281885818,1326262602104,5071418015120, 19415851639296,74419447792340]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)