A238017 - OEIS

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A238017 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`1`
`3`		`10`
`4`		`10`
`5`		`55`
`6`		`-1`
`7`		`210`
`8`		`120`
`9`		`120`
`10`		`1485`
`11`		`2145`
`12`		`-1`
`13`		`2080`
`14`		`-1`
`15`		`-1`
`16`		`56616`
`17`		`1326`
`18`		`12561`
`19`		`-1`
`20`		`1540`
`21`		`1540`
`22`		`21736`
`23`		`-1`
`24`		`-1`
`25`		`52650`
`26`		`16653`
`27`		`4950`
`28`		`26796`
`29`		`10440`
`30`		`12880`
`31`		`7750`
`32`		`-1`
`33`		`-1`
`34`		`7140`
`35`		`7140`
`36`		`154290`
`37`		`-1`
`38`		`11476`
`39`		`-1`
`40`		`214840`
`41`		`-1`
`42`		`-1`
`43`		`207690`
`44`		`23252790`
`45`		`-1`
`46`		`-1`
`47`		`6895041`
`48`		`-1`
`49`		`750925`

[0,1,10,10,55,-1,210,120,120,1485,2145,-1,2080,-1, -1,56616,1326,12561,-1,1540,1540,21736,-1,-1, 52650,16653,4950,26796,10440,12880,7750,-1,-1, 7140,7140,154290,-1,11476,-1,214840,-1,-1,207690, 23252790,-1,-1,6895041,-1,750925]

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Last modified August 22 06:14 EDT 2024. Contains 375356 sequences. (Running on oeis4.)