A070031 - OEIS

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A070031 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`13`
`3`		`42`
`4`		`138`
`5`		`462`
`6`		`1573`
`7`		`5434`
`8`		`19006`
`9`		`67184`
`10`		`239666`
`11`		`861764`
`12`		`3120180`
`13`		`11366370`
`14`		`41630805`
`15`		`153216570`
`16`		`566343030`
`17`		`2101610280`
`18`		`7826451270`
`19`		`29240172780`
`20`		`109566326220`
`21`		`411671536380`
`22`		`1550629453698`
`23`		`5854180360932`
`24`		`22148866939948`
`25`		`83965042615552`
`26`		`318895250752708`

[1,4,13,42,138,462,1573,5434,19006,67184,239666, 861764,3120180,11366370,41630805,153216570, 566343030,2101610280,7826451270,29240172780, 109566326220,411671536380,1550629453698, 5854180360932,22148866939948,83965042615552, 318895250752708]

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Last modified May 4 12:48 EDT 2024. Contains 372243 sequences. (Running on oeis4.)