A001251 - OEIS

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A001251 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`2`
`4`		`12`
`5`		`70`
`6`		`442`
`7`		`3108`
`8`		`24216`
`9`		`208586`
`10`		`1972904`
`11`		`20373338`
`12`		`228346522`
`13`		`2763212980`
`14`		`35926266244`
`15`		`499676669254`
`16`		`7405014187564`
`17`		`116511984902094`
`18`		`1940073930857802`
`19`		`34087525861589564`
`20`		`630296344519286304`
`21`		`12235215845125112122`
`22`		`248789737587365945992`

[0,0,2,12,70,442,3108,24216,208586,1972904, 20373338,228346522,2763212980,35926266244, 499676669254,7405014187564,116511984902094, 1940073930857802,34087525861589564, 630296344519286304,12235215845125112122, 248789737587365945992]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)