A274257 - OEIS

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

A274257 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`5`
`2`		`52`
`3`		`880`
`4`		`17856`
`5`		`399296`
`6`		`9491008`
`7`		`235274240`
`8`		`6014201600`
`9`		`157387037696`
`10`		`4195621863424`
`11`		`113534211297280`
`12`		`3110485641494528`
`13`		`86107512380129280`
`14`		`2404899661362184192`
`15`		`67680890349732102144`
`16`		`1917436905101367443456`
`17`		`54640222663002565640192`
`18`		`1565130555077611323392000`
`19`		`45039415225401829826232320`

[1,5,52,880,17856,399296,9491008,235274240, 6014201600,157387037696,4195621863424, 113534211297280,3110485641494528, 86107512380129280,2404899661362184192, 67680890349732102144,1917436905101367443456, 54640222663002565640192,1565130555077611323392000, 45039415225401829826232320]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)