A087404 - OEIS

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A087404 as a simple table

`n`		`a(n)`
`0`		`2`
`1`		`4`
`2`		`26`
`3`		`124`
`4`		`626`
`5`		`3124`
`6`		`15626`
`7`		`78124`
`8`		`390626`
`9`		`1953124`
`10`		`9765626`
`11`		`48828124`
`12`		`244140626`
`13`		`1220703124`
`14`		`6103515626`
`15`		`30517578124`
`16`		`152587890626`
`17`		`762939453124`
`18`		`3814697265626`
`19`		`19073486328124`
`20`		`95367431640626`
`21`		`476837158203124`

[2,4,26,124,626,3124,15626,78124,390626,1953124, 9765626,48828124,244140626,1220703124,6103515626, 30517578124,152587890626,762939453124, 3814697265626,19073486328124,95367431640626, 476837158203124]

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Last modified April 24 15:18 EDT 2024. Contains 371960 sequences. (Running on oeis4.)