A180778 - OEIS

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A180778 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`9`
`4`		`198`
`5`		`2294`
`6`		`19467`
`7`		`126864`
`8`		`674922`
`9`		`2997717`
`10`		`11615754`
`11`		`39660995`
`12`		`123162204`
`13`		`348412638`
`14`		`920581314`
`15`		`2264397902`
`16`		`5294830516`
`17`		`11692554408`
`18`		`24858751383`
`19`		`50403391227`
`20`		`99282023930`
`21`		`187902783369`
`22`		`347689331443`
`23`		`621482071507`

[0,0,9,198,2294,19467,126864,674922,2997717, 11615754,39660995,123162204,348412638,920581314, 2264397902,5294830516,11692554408,24858751383, 50403391227,99282023930,187902783369,347689331443, 621482071507]

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Last modified August 13 11:30 EDT 2022. Contains 356091 sequences. (Running on oeis4.)