A000254 - OEIS

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A000254 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`3`
`3`		`11`
`4`		`50`
`5`		`274`
`6`		`1764`
`7`		`13068`
`8`		`109584`
`9`		`1026576`
`10`		`10628640`
`11`		`120543840`
`12`		`1486442880`
`13`		`19802759040`
`14`		`283465647360`
`15`		`4339163001600`
`16`		`70734282393600`
`17`		`1223405590579200`
`18`		`22376988058521600`
`19`		`431565146817638400`
`20`		`8752948036761600000`
`21`		`186244810780170240000`

[0,1,3,11,50,274,1764,13068,109584,1026576, 10628640,120543840,1486442880,19802759040, 283465647360,4339163001600,70734282393600, 1223405590579200,22376988058521600, 431565146817638400,8752948036761600000, 186244810780170240000]

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