A287971 - OEIS

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

A287971 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`5`
`4`		`14`
`5`		`42`
`6`		`132`
`7`		`429`
`8`		`1429`
`9`		`4860`
`10`		`16775`
`11`		`58679`
`12`		`207428`
`13`		`739970`
`14`		`2660157`
`15`		`9627149`
`16`		`35043221`
`17`		`128207940`
`18`		`471160868`
`19`		`1738387703`
`20`		`6436639288`
`21`		`23908119163`
`22`		`89056620547`
`23`		`332583259981`
`24`		`1244920744009`
`25`		`4669782159158`
`26`		`17550211110693`
`27`		`66073189230521`

[1,1,2,5,14,42,132,429,1429,4860,16775,58679, 207428,739970,2660157,9627149,35043221,128207940, 471160868,1738387703,6436639288,23908119163, 89056620547,332583259981,1244920744009, 4669782159158,17550211110693,66073189230521]

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 15 11:09 EDT 2024. Contains 375938 sequences. (Running on oeis4.)