A026156 - OEIS

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A026156 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`20`
`4`		`111`
`5`		`616`
`6`		`3464`
`7`		`19656`
`8`		`112370`
`9`		`646272`
`10`		`3735324`
`11`		`21678696`
`12`		`126256361`
`13`		`737513400`
`14`		`4319243760`
`15`		`25352692620`
`16`		`149108262264`
`17`		`878502339712`
`18`		`5184007871160`
`19`		`30633757767144`
`20`		`181253849830625`
`21`		`1073680925191128`
`22`		`6366778606697544`
`23`		`37790436148353900`
`24`		`224505805610383128`

[1,4,20,111,616,3464,19656,112370,646272,3735324, 21678696,126256361,737513400,4319243760, 25352692620,149108262264,878502339712, 5184007871160,30633757767144,181253849830625, 1073680925191128,6366778606697544, 37790436148353900,224505805610383128]

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Last modified August 25 03:01 EDT 2024. Contains 375420 sequences. (Running on oeis4.)