A007454 - OEIS

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A007454 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`6`
`5`		`18`
`6`		`64`
`7`		`227`
`8`		`856`
`9`		`3280`
`10`		`12885`
`11`		`51342`
`12`		`207544`
`13`		`847886`
`14`		`3497384`
`15`		`14541132`
`16`		`60884173`
`17`		`256480895`
`18`		`1086310549`
`19`		`4623128656`
`20`		`19759964149`
`21`		`84784735379`
`22`		`365066645854`
`23`		`1576927900803`
`24`		`6831518134251`
`25`		`29674505668536`
`26`		`129216630647787`
`27`		`563949605921815`

[1,1,2,6,18,64,227,856,3280,12885,51342,207544, 847886,3497384,14541132,60884173,256480895, 1086310549,4623128656,19759964149,84784735379, 365066645854,1576927900803,6831518134251, 29674505668536,129216630647787,563949605921815]

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Last modified August 14 15:26 EDT 2024. Contains 375165 sequences. (Running on oeis4.)