A189804 - OEIS

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A189804 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`1`
`3`		`1`
`4`		`1`
`5`		`0`
`6`		`0`
`7`		`2`
`8`		`6`
`9`		`14`
`10`		`20`
`11`		`20`
`12`		`0`
`13`		`0`
`14`		`0`
`15`		`6`
`16`		`36`
`17`		`150`
`18`		`450`
`19`		`1050`
`20`		`1680`
`21`		`1680`
`22`		`0`
`23`		`0`
`24`		`0`
`25`		`0`
`26`		`24`
`27`		`240`
`28`		`1560`
`29`		`7560`
`30`		`29400`
`31`		`90720`
`32`		`218400`
`33`		`369600`
`34`		`369600`
`35`		`0`
`36`		`0`
`37`		`0`
`38`		`0`
`39`		`0`
`40`		`120`
`41`		`1800`
`42`		`16800`
`43`		`117600`
`44`		`667800`
`45`		`3137400`
`46`		`12243000`
`47`		`38808000`
`48`		`96096000`
`49`		`168168000`
`50`		`168168000`

[1,0,1,1,1,0,0,2,6,14,20,20,0,0,0,6,36,150,450, 1050,1680,1680,0,0,0,0,24,240,1560,7560,29400, 90720,218400,369600,369600,0,0,0,0,0,120,1800, 16800,117600,667800,3137400,12243000,38808000, 96096000,168168000,168168000]

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Last modified July 15 14:48 EDT 2024. Contains 374333 sequences. (Running on oeis4.)