A149654 - OEIS

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

A149654 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`5`
`3`		`15`
`4`		`75`
`5`		`275`
`6`		`1375`
`7`		`5601`
`8`		`28005`
`9`		`121089`
`10`		`605445`
`11`		`2715677`
`12`		`13578385`
`13`		`62402157`
`14`		`312010785`
`15`		`1458538087`
`16`		`7292690435`
`17`		`34518363331`
`18`		`172591816655`
`19`		`824661140195`
`20`		`4123305700975`
`21`		`19846014090155`
`22`		`99230070450775`
`23`		`480374578408091`
`24`		`2401872892040455`
`25`		`11681652878375315`
`26`		`58408264391876575`
`27`		`285150381706792519`

[1,1,5,15,75,275,1375,5601,28005,121089,605445, 2715677,13578385,62402157,312010785,1458538087, 7292690435,34518363331,172591816655,824661140195, 4123305700975,19846014090155,99230070450775, 480374578408091,2401872892040455, 11681652878375315,58408264391876575, 285150381706792519]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 19 05:19 EDT 2024. Contains 371782 sequences. (Running on oeis4.)