A002721 - OEIS

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A002721 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`12`
`2`		`132`
`3`		`847`
`4`		`3921`
`5`		`14506`
`6`		`45402`
`7`		`124707`
`8`		`308407`
`9`		`699766`
`10`		`1477686`
`11`		`2936517`
`12`		`5540107`
`13`		`9993192`
`14`		`17333536`
`15`		`29048541`
`16`		`47220357`
`17`		`74703832`
`18`		`115341952`
`19`		`174223731`
`20`		`257989821`
`21`		`375191422`
`22`		`536708382`
`23`		`756232687`
`24`		`1050823851`
`25`		`1441543026`
`26`		`1954172962`

[1,12,132,847,3921,14506,45402,124707,308407, 699766,1477686,2936517,5540107,9993192,17333536, 29048541,47220357,74703832,115341952,174223731, 257989821,375191422,536708382,756232687, 1050823851,1441543026,1954172962]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)