A150026 - OEIS

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

A150026 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`5`
`3`		`19`
`4`		`74`
`5`		`272`
`6`		`1128`
`7`		`4785`
`8`		`19680`
`9`		`85534`
`10`		`375994`
`11`		`1621412`
`12`		`7228110`
`13`		`32438712`
`14`		`143597689`
`15`		`649971056`
`16`		`2955472000`
`17`		`13301538596`
`18`		`60825607272`
`19`		`279067019064`
`20`		`1270235883915`
`21`		`5851260862078`
`22`		`27020828578132`
`23`		`123996284280459`
`24`		`574325273769182`
`25`		`2665349207045963`
`26`		`12306252890649850`
`27`		`57243664510934520`

[1,2,5,19,74,272,1128,4785,19680,85534,375994, 1621412,7228110,32438712,143597689,649971056, 2955472000,13301538596,60825607272,279067019064, 1270235883915,5851260862078,27020828578132, 123996284280459,574325273769182,2665349207045963, 12306252890649850,57243664510934520]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 05:19 EDT 2024. Contains 371782 sequences. (Running on oeis4.)