A020106 - OEIS

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A020106 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`4`
`4`		`12`
`5`		`56`
`6`		`319`
`7`		`2134`
`8`		`16431`
`9`		`142946`
`10`		`1386570`
`11`		`14836295`
`12`		`173584650`
`13`		`2204525052`
`14`		`30201993206`
`15`		`443969300124`
`16`		`6970318011937`
`17`		`116404310799339`
`18`		`2060356301148293`
`19`		`38528662831473070`
`20`		`759014657780019469`

[1,1,2,4,12,56,319,2134,16431,142946,1386570, 14836295,173584650,2204525052,30201993206, 443969300124,6970318011937,116404310799339, 2060356301148293,38528662831473070, 759014657780019469]

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)