A000639 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A000639 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`0`
`6`		`1`
`7`		`1`
`8`		`4`
`9`		`8`
`10`		`22`
`11`		`51`
`12`		`136`
`13`		`335`
`14`		`871`
`15`		`2217`
`16`		`5749`
`17`		`14837`
`18`		`38636`
`19`		`100622`
`20`		`263381`
`21`		`690709`
`22`		`1817544`
`23`		`4793449`
`24`		`12675741`
`25`		`33592349`
`26`		`89223734`
`27`		`237455566`
`28`		`633176939`
`29`		`1691377956`
`30`		`4525792533`
`31`		`12129365576`
`32`		`32556355947`
`33`		`87508275471`
`34`		`235529797422`

[0,0,0,0,0,1,1,4,8,22,51,136,335,871,2217,5749, 14837,38636,100622,263381,690709,1817544,4793449, 12675741,33592349,89223734,237455566,633176939, 1691377956,4525792533,12129365576,32556355947, 87508275471,235529797422]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 10 23:01 EDT 2024. Contains 372388 sequences. (Running on oeis4.)