A026897 - OEIS

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

A026897 as a simple table

`n`		`a(n)`
`4`		`1`
`5`		`11`
`6`		`80`
`7`		`489`
`8`		`2732`
`9`		`14512`
`10`		`74888`
`11`		`380329`
`12`		`1916709`
`13`		`9637687`
`14`		`48528434`
`15`		`245289395`
`16`		`1246499970`
`17`		`6374296278`
`18`		`32816505566`
`19`		`170106486358`
`20`		`887697088316`
`21`		`4662338571684`
`22`		`24636365887246`
`23`		`130918389450108`
`24`		`699335986465354`

[1,11,80,489,2732,14512,74888,380329,1916709, 9637687,48528434,245289395,1246499970,6374296278, 32816505566,170106486358,887697088316, 4662338571684,24636365887246,130918389450108, 699335986465354]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 08:28 EDT 2024. Contains 371927 sequences. (Running on oeis4.)