A042980 - OEIS

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A042980 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`0`
`3`		`0`
`4`		`1`
`5`		`1`
`6`		`2`
`7`		`5`
`8`		`6`
`9`		`15`
`10`		`24`
`11`		`45`
`12`		`85`
`13`		`155`
`14`		`288`
`15`		`550`
`16`		`1008`
`17`		`1935`
`18`		`3626`
`19`		`6885`
`20`		`13107`
`21`		`24940`
`22`		`47616`
`23`		`91225`
`24`		`174590`
`25`		`335626`
`26`		`645120`
`27`		`1242600`
`28`		`2396745`
`29`		`4627915`
`30`		`8947294`
`31`		`17318945`
`32`		`33552384`
`33`		`65076240`
`34`		`126320640`
`35`		`245424829`
`36`		`477218560`
`37`		`928638035`
`38`		`1808400384`
`39`		`3524082400`
`40`		`6871921458`
`41`		`13408691175`
`42`		`26178823218`

[1,0,0,1,1,2,5,6,15,24,45,85,155,288,550,1008, 1935,3626,6885,13107,24940,47616,91225,174590, 335626,645120,1242600,2396745,4627915,8947294, 17318945,33552384,65076240,126320640,245424829, 477218560,928638035,1808400384,3524082400, 6871921458,13408691175,26178823218]

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Last modified April 18 03:33 EDT 2024. Contains 371767 sequences. (Running on oeis4.)