A218645 - OEIS

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A218645 as a simple table

`n`		`a(n)`
`1`		`4`
`2`		`16`
`3`		`66`
`4`		`292`
`5`		`1280`
`6`		`5644`
`7`		`24782`
`8`		`108940`
`9`		`478862`
`10`		`2104866`
`11`		`9252000`
`12`		`40667620`
`13`		`178756504`
`14`		`785732636`
`15`		`3453724976`
`16`		`15181011874`
`17`		`66728857148`
`18`		`293309853452`
`19`		`1289257359676`
`20`		`5666991817956`
`21`		`24909531073894`
`22`		`109491024206644`

[4,16,66,292,1280,5644,24782,108940,478862, 2104866,9252000,40667620,178756504,785732636, 3453724976,15181011874,66728857148,293309853452, 1289257359676,5666991817956,24909531073894, 109491024206644]

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Last modified May 5 13:34 EDT 2024. Contains 372275 sequences. (Running on oeis4.)