A131385 as tables, graphs or sounds

A131385 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`16`
`5`		`60`
`6`		`144`
`7`		`672`
`8`		`1536`
`9`		`6480`
`10`		`19200`
`11`		`76032`
`12`		`165888`
`13`		`1048320`
`14`		`2257920`
`15`		`8294400`
`16`		`28311552`
`17`		`126904320`
`18`		`268738560`
`19`		`1470873600`
`20`		`3096576000`
`21`		`16094453760`
`22`		`51385466880`
`23`		`175814737920`
`24`		`366917713920`
`25`		`2717245440000`

[1,2,6,16,60,144,672,1536,6480,19200,76032,165888, 1048320,2257920,8294400,28311552,126904320, 268738560,1470873600,3096576000,16094453760, 51385466880,175814737920,366917713920, 2717245440000]

Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

AT&T Labs Research