A303508 - OEIS

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A303508 as a simple table

`n`		`a(n)`
`1`		`4`
`2`		`20`
`3`		`78`
`4`		`420`
`5`		`2088`
`6`		`9916`
`7`		`49740`
`8`		`245904`
`9`		`1204720`
`10`		`5966528`
`11`		`29461128`
`12`		`145208512`
`13`		`717277504`
`14`		`3540859200`
`15`		`17473224048`
`16`		`86264173904`
`17`		`425824598480`
`18`		`2101839903376`
`19`		`10375467545712`
`20`		`51215782794640`
`21`		`252809675084016`
`22`		`1247933698121232`

[4,20,78,420,2088,9916,49740,245904,1204720, 5966528,29461128,145208512,717277504,3540859200, 17473224048,86264173904,425824598480, 2101839903376,10375467545712,51215782794640, 252809675084016,1247933698121232]

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Last modified July 30 18:39 EDT 2024. Contains 374771 sequences. (Running on oeis4.)