A007858 - OEIS

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A007858 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`4`
`4`		`13`
`5`		`44`
`6`		`164`
`7`		`636`
`8`		`2559`
`9`		`10556`
`10`		`44440`
`11`		`190112`
`12`		`824135`
`13`		`3612244`
`14`		`15981632`
`15`		`71277736`
`16`		`320121747`
`17`		`1446537564`
`18`		`6571858168`
`19`		`30000766128`
`20`		`137544893940`
`21`		`633051803120`
`22`		`2923867281660`
`23`		`13547594977500`
`24`		`62955434735505`
`25`		`293336372858724`
`26`		`1370149533359784`
`27`		`6414423856436816`

[1,2,4,13,44,164,636,2559,10556,44440,190112, 824135,3612244,15981632,71277736,320121747, 1446537564,6571858168,30000766128,137544893940, 633051803120,2923867281660,13547594977500, 62955434735505,293336372858724,1370149533359784, 6414423856436816]

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Last modified April 19 16:08 EDT 2024. Contains 371794 sequences. (Running on oeis4.)