A020120 - OEIS

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A020120 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`4`
`4`		`13`
`5`		`59`
`6`		`333`
`7`		`2233`
`8`		`17226`
`9`		`150104`
`10`		`1458150`
`11`		`15623032`
`12`		`183012660`
`13`		`2326875240`
`14`		`31911431854`
`15`		`469553925839`
`16`		`7378704548889`
`17`		`123329776031415`
`18`		`2184698889699347`
`19`		`40885079221516336`
`20`		`806020133224179177`

[1,1,2,4,13,59,333,2233,17226,150104,1458150, 15623032,183012660,2326875240,31911431854, 469553925839,7378704548889,123329776031415, 2184698889699347,40885079221516336, 806020133224179177]

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Last modified August 21 01:12 EDT 2024. Contains 375342 sequences. (Running on oeis4.)