A117757 - OEIS

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

A117757 as a simple table

`n`		`a(n)`
`0`		`2`
`1`		`4`
`2`		`12`
`3`		`36`
`4`		`118`
`5`		`392`
`6`		`1336`
`7`		`4642`
`8`		`16458`
`9`		`59025`
`10`		`213922`
`11`		`781924`
`12`		`2879938`
`13`		`10673034`
`14`		`39769185`
`15`		`148880193`
`16`		`559658890`
`17`		`2111459404`
`18`		`7991867657`
`19`		`30336822624`
`20`		`115457945437`
`21`		`440455347499`
`22`		`1683882372217`

[2,4,12,36,118,392,1336,4642,16458,59025,213922, 781924,2879938,10673034,39769185,148880193, 559658890,2111459404,7991867657,30336822624, 115457945437,440455347499,1683882372217]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)