A001873 - OEIS

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A001873 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`5`
`2`		`20`
`3`		`65`
`4`		`190`
`5`		`511`
`6`		`1295`
`7`		`3130`
`8`		`7285`
`9`		`16435`
`10`		`36122`
`11`		`77645`
`12`		`163730`
`13`		`339535`
`14`		`693835`
`15`		`1399478`
`16`		`2790100`
`17`		`5504650`
`18`		`10758050`
`19`		`20845300`
`20`		`40075630`
`21`		`76495450`
`22`		`145052300`
`23`		`273381350`
`24`		`512347975`
`25`		`955187033`
`26`		`1772132390`
`27`		`3272875935`
`28`		`6018885570`
`29`		`11024814945`
`30`		`20118711993`

[1,5,20,65,190,511,1295,3130,7285,16435,36122, 77645,163730,339535,693835,1399478,2790100, 5504650,10758050,20845300,40075630,76495450, 145052300,273381350,512347975,955187033, 1772132390,3272875935,6018885570,11024814945, 20118711993]

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Last modified April 24 05:23 EDT 2024. Contains 371918 sequences. (Running on oeis4.)