A003517 - OEIS

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

A003517 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`6`
`4`		`27`
`5`		`110`
`6`		`429`
`7`		`1638`
`8`		`6188`
`9`		`23256`
`10`		`87210`
`11`		`326876`
`12`		`1225785`
`13`		`4601610`
`14`		`17298645`
`15`		`65132550`
`16`		`245642760`
`17`		`927983760`
`18`		`3511574910`
`19`		`13309856820`
`20`		`50528160150`
`21`		`192113383644`
`22`		`731508653106`
`23`		`2789279908316`
`24`		`10649977831752`
`25`		`40715807302800`
`26`		`155851062397940`
`27`		`597261490737912`

[1,6,27,110,429,1638,6188,23256,87210,326876, 1225785,4601610,17298645,65132550,245642760, 927983760,3511574910,13309856820,50528160150, 192113383644,731508653106,2789279908316, 10649977831752,40715807302800,155851062397940, 597261490737912]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 09:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)