A071731 - OEIS

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

A071731 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`5`
`3`		`15`
`4`		`46`
`5`		`146`
`6`		`477`
`7`		`1595`
`8`		`5434`
`9`		`18798`
`10`		`65858`
`11`		`233206`
`12`		`833340`
`13`		`3001316`
`14`		`10883485`
`15`		`39703635`
`16`		`145612770`
`17`		`536568150`
`18`		`1985612310`
`19`		`7376106210`
`20`		`27495861060`
`21`		`102820589820`
`22`		`385609643250`
`23`		`1449998633694`
`24`		`5465731321476`

[1,2,5,15,46,146,477,1595,5434,18798,65858,233206, 833340,3001316,10883485,39703635,145612770, 536568150,1985612310,7376106210,27495861060, 102820589820,385609643250,1449998633694, 5465731321476]

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 26 22:10 EDT 2024. Contains 375462 sequences. (Running on oeis4.)