A138562 as tables, graphs or sounds

A138562 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`38`
`3`		`616`
`4`		`14744`
`5`		`479364`
`6`		`20021768`
`7`		`1031673164`
`8`		`63597989864`
`9`		`4579513525216`
`10`		`377953469391584`
`11`		`35211153592004064`
`12`		`3657198048669038384`
`13`		`419166387797337858500`
`14`		`52561549979435515611488`
`15`		`7158828855330149502246076`
`16`		`1052478318277669232896492064`
`17`		`166132533639153074372662711680`

[1,4,38,616,14744,479364,20021768,1031673164, 63597989864,4579513525216,377953469391584, 35211153592004064,3657198048669038384, 419166387797337858500,52561549979435515611488, 7158828855330149502246076, 1052478318277669232896492064, 166132533639153074372662711680]

Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research