A002213 - OEIS

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A002213 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`5`
`4`		`20`
`5`		`84`
`6`		`354`
`7`		`1540`
`8`		`6704`
`9`		`29610`
`10`		`131745`
`11`		`591049`
`12`		`2669346`
`13`		`12131148`
`14`		`55431285`
`15`		`254539897`
`16`		`1174027598`
`17`		`5436826110`
`18`		`25269402555`
`19`		`117838870833`
`20`		`551192276450`
`21`		`2585418254532`
`22`		`12158383558066`
`23`		`57313008207960`

[1,1,5,20,84,354,1540,6704,29610,131745,591049, 2669346,12131148,55431285,254539897,1174027598, 5436826110,25269402555,117838870833,551192276450, 2585418254532,12158383558066,57313008207960]

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Last modified May 7 19:42 EDT 2024. Contains 372313 sequences. (Running on oeis4.)