A268213 - OEIS

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

A268213 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`5`
`3`		`16`
`4`		`51`
`5`		`180`
`6`		`622`
`7`		`2288`
`8`		`8227`
`9`		`30940`
`10`		`113882`
`11`		`434112`
`12`		`1622414`
`13`		`6240360`
`14`		`23572668`
`15`		`91245600`
`16`		`347398435`
`17`		`1351035180`
`18`		`5174839714`
`19`		`20197293600`
`20`		`77729205658`
`21`		`304232711640`
`22`		`1175332659332`
`23`		`4610721207456`
`24`		`17868732968846`
`25`		`70228114687640`
`26`		`272886854006852`

[1,2,5,16,51,180,622,2288,8227,30940,113882, 434112,1622414,6240360,23572668,91245600, 347398435,1351035180,5174839714,20197293600, 77729205658,304232711640,1175332659332, 4610721207456,17868732968846,70228114687640, 272886854006852]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 03:01 EDT 2024. Contains 371767 sequences. (Running on oeis4.)