A005057 - OEIS

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A005057 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`3`
`2`		`21`
`3`		`117`
`4`		`609`
`5`		`3093`
`6`		`15561`
`7`		`77997`
`8`		`390369`
`9`		`1952613`
`10`		`9764601`
`11`		`48826077`
`12`		`244136529`
`13`		`1220694933`
`14`		`6103499241`
`15`		`30517545357`
`16`		`152587825089`
`17`		`762939322053`
`18`		`3814697003481`
`19`		`19073485803837`
`20`		`95367430592049`
`21`		`476837156105973`
`22`		`2384185786821321`
`23`		`11920928946689517`

[0,3,21,117,609,3093,15561,77997,390369,1952613, 9764601,48826077,244136529,1220694933,6103499241, 30517545357,152587825089,762939322053, 3814697003481,19073485803837,95367430592049, 476837156105973,2384185786821321, 11920928946689517]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)