A007564 - OEIS

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

A007564 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`4`
`3`		`19`
`4`		`100`
`5`		`562`
`6`		`3304`
`7`		`20071`
`8`		`124996`
`9`		`793774`
`10`		`5120632`
`11`		`33463102`
`12`		`221060008`
`13`		`1473830308`
`14`		`9904186192`
`15`		`67015401391`
`16`		`456192667396`
`17`		`3122028222934`
`18`		`21467769499864`
`19`		`148246598341018`
`20`		`1027656663676600`
`21`		`7148588698592956`
`22`		`49884553176689584`

[1,1,4,19,100,562,3304,20071,124996,793774, 5120632,33463102,221060008,1473830308,9904186192, 67015401391,456192667396,3122028222934, 21467769499864,148246598341018,1027656663676600, 7148588698592956,49884553176689584]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)