A001147 - OEIS

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

A001147 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`3`
`3`		`15`
`4`		`105`
`5`		`945`
`6`		`10395`
`7`		`135135`
`8`		`2027025`
`9`		`34459425`
`10`		`654729075`
`11`		`13749310575`
`12`		`316234143225`
`13`		`7905853580625`
`14`		`213458046676875`
`15`		`6190283353629375`
`16`		`191898783962510625`
`17`		`6332659870762850625`
`18`		`221643095476699771875`
`19`		`8200794532637891559375`
`20`		`319830986772877770815625`

[1,1,3,15,105,945,10395,135135,2027025,34459425, 654729075,13749310575,316234143225,7905853580625, 213458046676875,6190283353629375, 191898783962510625,6332659870762850625, 221643095476699771875,8200794532637891559375, 319830986772877770815625]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 3 12:13 EDT 2024. Contains 372209 sequences. (Running on oeis4.)