A218688 - OEIS

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A218688 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`3`
`3`		`15`
`4`		`106`
`5`		`975`
`6`		`11106`
`7`		`151501`
`8`		`2415960`
`9`		`44221869`
`10`		`915826600`
`11`		`21211128411`
`12`		`544126606992`
`13`		`15334985416075`
`14`		`471495297242256`
`15`		`15719617534811625`
`16`		`565271886957356416`
`17`		`21820620411482896089`
`18`		`900398349688515500160`
`19`		`39564926462522623540519`
`20`		`1845034125763359894240000`

[1,1,3,15,106,975,11106,151501,2415960,44221869, 915826600,21211128411,544126606992,15334985416075, 471495297242256,15719617534811625, 565271886957356416,21820620411482896089, 900398349688515500160,39564926462522623540519, 1845034125763359894240000]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)