A089947 - OEIS

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A089947 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`5`
`2`		`25`
`3`		`115`
`4`		`500`
`5`		`2092`
`6`		`8512`
`7`		`33910`
`8`		`132892`
`9`		`514079`
`10`		`1968021`
`11`		`7470434`
`12`		`28160354`
`13`		`105542777`
`14`		`393672627`
`15`		`1462503264`
`16`		`5414896000`
`17`		`19991387639`
`18`		`73628208598`
`19`		`270614786791`
`20`		`992880076249`
`21`		`3637400475618`
`22`		`13308475404934`
`23`		`48639360355243`
`24`		`177597694845849`

[1,5,25,115,500,2092,8512,33910,132892,514079, 1968021,7470434,28160354,105542777,393672627, 1462503264,5414896000,19991387639,73628208598, 270614786791,992880076249,3637400475618, 13308475404934,48639360355243,177597694845849]

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Last modified May 5 03:37 EDT 2024. Contains 372257 sequences. (Running on oeis4.)