A000980 - OEIS

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A000980 as a simple table

`n`		`a(n)`
`0`		`2`
`1`		`4`
`2`		`8`
`3`		`20`
`4`		`52`
`5`		`152`
`6`		`472`
`7`		`1520`
`8`		`5044`
`9`		`17112`
`10`		`59008`
`11`		`206260`
`12`		`729096`
`13`		`2601640`
`14`		`9358944`
`15`		`33904324`
`16`		`123580884`
`17`		`452902072`
`18`		`1667837680`
`19`		`6168510256`
`20`		`22903260088`
`21`		`85338450344`
`22`		`318995297200`
`23`		`1195901750512`
`24`		`4495448217544`
`25`		`16940411201280`
`26`		`63983233268592`

[2,4,8,20,52,152,472,1520,5044,17112,59008,206260, 729096,2601640,9358944,33904324,123580884, 452902072,1667837680,6168510256,22903260088, 85338450344,318995297200,1195901750512, 4495448217544,16940411201280,63983233268592]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)