A006629 - OEIS

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A006629 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`18`
`3`		`88`
`4`		`455`
`5`		`2448`
`6`		`13566`
`7`		`76912`
`8`		`444015`
`9`		`2601300`
`10`		`15426840`
`11`		`92431584`
`12`		`558685348`
`13`		`3402497504`
`14`		`20858916870`
`15`		`128618832864`
`16`		`797168807855`
`17`		`4963511449260`
`18`		`31032552351570`
`19`		`194743066471800`
`20`		`1226232861415695`

[1,4,18,88,455,2448,13566,76912,444015,2601300, 15426840,92431584,558685348,3402497504, 20858916870,128618832864,797168807855, 4963511449260,31032552351570,194743066471800, 1226232861415695]

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Last modified April 16 04:38 EDT 2024. Contains 371696 sequences. (Running on oeis4.)