A273902 - OEIS

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A273902 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`2`
`4`		`6`
`5`		`20`
`6`		`64`
`7`		`204`
`8`		`656`
`9`		`2120`
`10`		`6873`
`11`		`22350`
`12`		`72881`
`13`		`238232`
`14`		`780384`
`15`		`2561164`
`16`		`8419766`
`17`		`27721784`
`18`		`91397927`
`19`		`301710074`
`20`		`997087170`
`21`		`3298556716`
`22`		`10922576840`
`23`		`36199599880`
`24`		`120068987717`
`25`		`398547827336`
`26`		`1323821438203`
`27`		`4400043488826`
`28`		`14633372199291`

[1,2,6,20,64,204,656,2120,6873,22350,72881,238232, 780384,2561164,8419766,27721784,91397927, 301710074,997087170,3298556716,10922576840, 36199599880,120068987717,398547827336, 1323821438203,4400043488826,14633372199291]

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Last modified May 5 01:52 EDT 2024. Contains 372257 sequences. (Running on oeis4.)