A123618 as tables, graphs or sounds

A123618 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`39`
`3`		`392`
`4`		`4420`
`5`		`52272`
`6`		`644231`
`7`		`8179600`
`8`		`106376580`
`9`		`1410528080`
`10`		`19006875580`
`11`		`259613952864`
`12`		`3587352778256`
`13`		`50068405195200`
`14`		`704925148185495`
`15`		`10001318622631200`
`16`		`142866058397606500`
`17`		`2053248549639210000`

[1,4,39,392,4420,52272,644231,8179600,106376580, 1410528080,19006875580,259613952864,3587352778256, 50068405195200,704925148185495,10001318622631200, 142866058397606500,2053248549639210000]

Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

AT&T Labs Research