A121553 - OEIS

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A121553 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`20`
`4`		`122`
`5`		`874`
`6`		`7164`
`7`		`65988`
`8`		`674064`
`9`		`7558416`
`10`		`92276640`
`11`		`1218255840`
`12`		`17293495680`
`13`		`262656570240`
`14`		`4250077896960`
`15`		`72992067321600`
`16`		`1326101675673600`
`17`		`25410150701107200`
`18`		`512158576546713600`
`19`		`10832221231772774400`

[1,4,20,122,874,7164,65988,674064,7558416, 92276640,1218255840,17293495680,262656570240, 4250077896960,72992067321600,1326101675673600, 25410150701107200,512158576546713600, 10832221231772774400]

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)