A000181 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A000181 as a simple table

`n`		`a(n)`
`4`		`2`
`5`		`15`
`6`		`60`
`7`		`469`
`8`		`3660`
`9`		`32958`
`10`		`328920`
`11`		`3614490`
`12`		`43341822`
`13`		`563144725`
`14`		`7880897892`
`15`		`118177520295`
`16`		`1890389939000`
`17`		`32130521850972`
`18`		`578260307815920`
`19`		`10985555094348948`
`20`		`219687969344126490`
`21`		`4613039009310624795`
`22`		`101479234383619208204`
`23`		`2333872309936442446905`

[2,15,60,469,3660,32958,328920,3614490,43341822, 563144725,7880897892,118177520295,1890389939000, 32130521850972,578260307815920,10985555094348948, 219687969344126490,4613039009310624795, 101479234383619208204,2333872309936442446905]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 8 02:12 EDT 2024. Contains 372317 sequences. (Running on oeis4.)