A215455 - OEIS

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

A215455 as a simple table

`n`		`a(n)`
`0`		`3`
`1`		`6`
`2`		`18`
`3`		`57`
`4`		`186`
`5`		`621`
`6`		`2109`
`7`		`7251`
`8`		`25146`
`9`		`87726`
`10`		`307293`
`11`		`1079370`
`12`		`3798309`
`13`		`13382817`
`14`		`47191491`
`15`		`166501902`
`16`		`587670810`
`17`		`2074699233`
`18`		`7325660010`
`19`		`25869337773`
`20`		`91359785781`
`21`		`322660334739`
`22`		`1139593274178`
`23`		`4024976418198`
`24`		`14216179376325`
`25`		`50211881768346`
`26`		`177350652641349`

[3,6,18,57,186,621,2109,7251,25146,87726,307293, 1079370,3798309,13382817,47191491,166501902, 587670810,2074699233,7325660010,25869337773, 91359785781,322660334739,1139593274178, 4024976418198,14216179376325,50211881768346, 177350652641349]

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 29 18:55 EDT 2024. Contains 375518 sequences. (Running on oeis4.)