A221457 - OEIS

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A221457 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`1`
`3`		`2`
`4`		`7`
`5`		`25`
`6`		`102`
`7`		`456`
`8`		`2218`
`9`		`11605`
`10`		`64647`
`11`		`379349`
`12`		`2320555`
`13`		`14658240`
`14`		`94843284`
`15`		`624544847`
`16`		`4164947151`
`17`		`28025750099`
`18`		`189783308469`
`19`		`1290899153376`
`20`		`8808076870934`
`21`		`60230644078721`
`22`		`412493027114619`
`23`		`2827998455493193`

[0,1,2,7,25,102,456,2218,11605,64647,379349, 2320555,14658240,94843284,624544847,4164947151, 28025750099,189783308469,1290899153376, 8808076870934,60230644078721,412493027114619, 2827998455493193]

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Last modified May 18 01:23 EDT 2024. Contains 372608 sequences. (Running on oeis4.)