A062885 - OEIS

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A062885 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`2`
`2`		`2`
`3`		`6`
`4`		`4`
`5`		`20`
`6`		`6`
`7`		`42`
`8`		`8`
`9`		`864`
`10`		`20`
`11`		`42086`
`12`		`420`
`13`		`208`
`14`		`42`
`15`		`420`
`16`		`64`
`17`		`8642086`
`18`		`864`
`19`		`642086`
`20`		`20`
`21`		`42`
`22`		`42086`
`23`		`6420864`
`24`		`864`
`25`		`-1`
`26`		`208`
`27`		`864`
`28`		`420`
`29`		`8642`
`30`		`420`
`31`		`86420864208642`
`32`		`64`
`33`		`420864208642086`
`34`		`8642086`
`35`		`420`
`36`		`864`
`37`		`86420864208642`
`38`		`642086`
`39`		`86420864208642086420864208642`
`40`		`-1`
`41`		`642086420864208642`
`42`		`42`
`43`		`86`
`44`		`2086420864`
`45`		`6420864208642086420`
`46`		`6420864`
`47`		`2086420864208642086`
`48`		`864`
`49`		`208642`
`50`		`-1`
`51`		`864208642086420864208642086420864`

[0,2,2,6,4,20,6,42,8,864,20,42086,420,208,42,420, 64,8642086,864,642086,20,42,42086,6420864,864,-1, 208,864,420,8642,420,86420864208642,64, 420864208642086,8642086,420,864,86420864208642, 642086,86420864208642086420864208642,-1, 642086420864208642,42,86,2086420864, 6420864208642086420,6420864,2086420864208642086, 864,208642,-1,864208642086420864208642086420864]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)