A003239 - OEIS

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A003239 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`4`
`4`		`10`
`5`		`26`
`6`		`80`
`7`		`246`
`8`		`810`
`9`		`2704`
`10`		`9252`
`11`		`32066`
`12`		`112720`
`13`		`400024`
`14`		`1432860`
`15`		`5170604`
`16`		`18784170`
`17`		`68635478`
`18`		`252088496`
`19`		`930138522`
`20`		`3446167860`
`21`		`12815663844`
`22`		`47820447028`
`23`		`178987624514`
`24`		`671825133648`
`25`		`2528212128776`
`26`		`9536895064400`
`27`		`36054433810102`
`28`		`136583761444364`
`29`		`518401146543812`

[1,1,2,4,10,26,80,246,810,2704,9252,32066,112720, 400024,1432860,5170604,18784170,68635478, 252088496,930138522,3446167860,12815663844, 47820447028,178987624514,671825133648, 2528212128776,9536895064400,36054433810102, 136583761444364,518401146543812]

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)