A257517 - OEIS

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A257517 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`1`
`3`		`0`
`4`		`2`
`5`		`2`
`6`		`5`
`7`		`8`
`8`		`18`
`9`		`30`
`10`		`66`
`11`		`120`
`12`		`252`
`13`		`484`
`14`		`1005`
`15`		`1984`
`16`		`4110`
`17`		`8278`
`18`		`17150`
`19`		`35024`
`20`		`72748`
`21`		`150012`
`22`		`312642`
`23`		`649424`
`24`		`1358244`
`25`		`2837484`
`26`		`5954980`
`27`		`12497616`
`28`		`26313432`
`29`		`55434248`
`30`		`117062205`
`31`		`247412928`
`32`		`523881238`
`33`		`1110335334`
`34`		`2356819254`
`35`		`5007428384`
`36`		`10652412108`
`37`		`22682131308`
`38`		`48349084054`
`39`		`103150869360`
`40`		`220276819836`

[1,0,1,0,2,2,5,8,18,30,66,120,252,484,1005,1984, 4110,8278,17150,35024,72748,150012,312642,649424, 1358244,2837484,5954980,12497616,26313432, 55434248,117062205,247412928,523881238,1110335334, 2356819254,5007428384,10652412108,22682131308, 48349084054,103150869360,220276819836]

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Last modified April 19 14:50 EDT 2024. Contains 371792 sequences. (Running on oeis4.)