A257561 - OEIS

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A257561 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`21`
`5`		`80`
`6`		`322`
`7`		`1346`
`8`		`5783`
`9`		`25372`
`10`		`113174`
`11`		`511649`
`12`		`2338988`
`13`		`10793251`
`14`		`50205607`
`15`		`235156609`
`16`		`1108120540`
`17`		`5249646137`
`18`		`24987770893`
`19`		`119443412277`
`20`		`573125649031`
`21`		`2759515312908`
`22`		`13328311926552`
`23`		`64559295743113`
`24`		`313530998739472`
`25`		`1526333617345412`
`26`		`7447070497787110`
`27`		`36409703715788374`
`28`		`178353171835771153`
`29`		`875224495042876048`
`30`		`4302111437028045585`

[1,1,2,6,21,80,322,1346,5783,25372,113174,511649, 2338988,10793251,50205607,235156609,1108120540, 5249646137,24987770893,119443412277,573125649031, 2759515312908,13328311926552,64559295743113, 313530998739472,1526333617345412,7447070497787110, 36409703715788374,178353171835771153, 875224495042876048,4302111437028045585]

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Last modified April 19 15:34 EDT 2024. Contains 371794 sequences. (Running on oeis4.)