A007220 - OEIS

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A007220 as a simple table

`n`		`a(n)`
`6`		`4`
`7`		`60`
`8`		`588`
`9`		`4636`
`10`		`31932`
`11`		`200364`
`12`		`1174492`
`13`		`6538492`
`14`		`34965772`
`15`		`181084796`
`16`		`913687100`
`17`		`4511834156`
`18`		`21880671292`
`19`		`104497300828`
`20`		`492527133804`
`21`		`2295081478492`
`22`		`10588446843324`
`23`		`48422608206348`
`24`		`219723559153052`
`25`		`990104070700956`
`26`		`4433734940648588`

[4,60,588,4636,31932,200364,1174492,6538492, 34965772,181084796,913687100,4511834156, 21880671292,104497300828,492527133804, 2295081478492,10588446843324,48422608206348, 219723559153052,990104070700956,4433734940648588]

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Last modified April 25 10:51 EDT 2024. Contains 371967 sequences. (Running on oeis4.)