A015640 - OEIS

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A015640 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`1`
`6`		`6`
`7`		`21`
`8`		`56`
`9`		`126`
`10`		`251`
`11`		`461`
`12`		`786`
`13`		`1281`
`14`		`1981`
`15`		`2981`
`16`		`4311`
`17`		`6131`
`18`		`8436`
`19`		`11496`
`20`		`15246`
`21`		`20076`
`22`		`25851`
`23`		`33166`
`24`		`41656`
`25`		`52281`
`26`		`64436`
`27`		`79316`
`28`		`96151`
`29`		`116626`
`30`		`139246`
`31`		`166651`
`32`		`196751`
`33`		`232501`
`34`		`271601`
`35`		`317961`
`36`		`367616`
`37`		`426521`
`38`		`489506`

[0,0,0,0,1,6,21,56,126,251,461,786,1281,1981,2981, 4311,6131,8436,11496,15246,20076,25851,33166, 41656,52281,64436,79316,96151,116626,139246, 166651,196751,232501,271601,317961,367616,426521, 489506]

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Last modified April 23 13:38 EDT 2024. Contains 371914 sequences. (Running on oeis4.)