A057405 - OEIS

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A057405 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`9`
`5`		`0`
`6`		`24`
`7`		`36`
`8`		`90`
`9`		`228`
`10`		`468`
`11`		`1296`
`12`		`2946`
`13`		`7272`
`14`		`20808`
`15`		`48612`
`16`		`143028`
`17`		`362700`
`18`		`977562`
`19`		`2702592`
`20`		`7084962`
`21`		`20179368`
`22`		`54981234`
`23`		`154896552`
`24`		`438387402`
`25`		`1224515736`
`26`		`3507218586`
`27`		`9902866092`
`28`		`28373581638`
`29`		`81503463852`

[1,0,0,0,9,0,24,36,90,228,468,1296,2946,7272, 20808,48612,143028,362700,977562,2702592,7084962, 20179368,54981234,154896552,438387402,1224515736, 3507218586,9902866092,28373581638,81503463852]

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Last modified August 14 18:32 EDT 2024. Contains 375166 sequences. (Running on oeis4.)