A250021 - OEIS

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A250021 as a simple table

`n`		`a(n)`
`1`		`20`
`2`		`9090`
`3`		`651144`
`4`		`16813550`
`5`		`226419876`
`6`		`1956551556`
`7`		`12294501768`
`8`		`60858118860`
`9`		`250423174860`
`10`		`889518620342`
`11`		`2803153559712`
`12`		`7998958658106`
`13`		`20995150489196`
`14`		`51312795029880`
`15`		`117921264043248`
`16`		`256830905369688`
`17`		`533584576037604`

[20,9090,651144,16813550,226419876,1956551556, 12294501768,60858118860,250423174860,889518620342, 2803153559712,7998958658106,20995150489196, 51312795029880,117921264043248,256830905369688, 533584576037604]

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Last modified April 19 11:31 EDT 2024. Contains 371792 sequences. (Running on oeis4.)