A306939 - OEIS

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

A306939 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`9`
`2`		`45`
`3`		`165`
`4`		`495`
`5`		`1287`
`6`		`3003`
`7`		`6435`
`8`		`12870`
`9`		`24311`
`10`		`43776`
`11`		`75753`
`12`		`127110`
`13`		`209475`
`14`		`346104`
`15`		`591261`
`16`		`1081575`
`17`		`2163150`
`18`		`4686826`
`19`		`10656387`
`20`		`24582663`
`21`		`56191734`
`22`		`125640180`
`23`		`273241161`
`24`		`577147212`
`25`		`1184959314`
`26`		`2369918628`
`27`		`4631710931`
`28`		`8881943832`
`29`		`16798969548`
`30`		`31537530456`

[1,9,45,165,495,1287,3003,6435,12870,24311,43776, 75753,127110,209475,346104,591261,1081575,2163150, 4686826,10656387,24582663,56191734,125640180, 273241161,577147212,1184959314,2369918628, 4631710931,8881943832,16798969548,31537530456]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)