A001870 - OEIS

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A001870 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`5`
`2`		`19`
`3`		`65`
`4`		`210`
`5`		`654`
`6`		`1985`
`7`		`5911`
`8`		`17345`
`9`		`50305`
`10`		`144516`
`11`		`411900`
`12`		`1166209`
`13`		`3283145`
`14`		`9197455`
`15`		`25655489`
`16`		`71293590`
`17`		`197452746`
`18`		`545222465`
`19`		`1501460635`
`20`		`4124739581`
`21`		`11306252545`
`22`		`30928921224`
`23`		`84451726200`
`24`		`230204999425`

[1,5,19,65,210,654,1985,5911,17345,50305,144516, 411900,1166209,3283145,9197455,25655489,71293590, 197452746,545222465,1501460635,4124739581, 11306252545,30928921224,84451726200,230204999425]

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