A118455 as tables, graphs or sounds

A118455 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`18`
`5`		`90`
`6`		`450`
`7`		`3150`
`8`		`22050`
`9`		`154350`
`10`		`1080450`
`11`		`11884950`
`12`		`130734450`
`13`		`1699547850`
`14`		`22094122050`
`15`		`287223586650`
`16`		`3733906626450`
`17`		`63476412649650`
`18`		`1079099015044050`
`19`		`20502881285836950`
`20`		`389554744430902050`

[1,2,6,18,90,450,3150,22050,154350,1080450, 11884950,130734450,1699547850,22094122050, 287223586650,3733906626450,63476412649650, 1079099015044050,20502881285836950, 389554744430902050]

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

AT&T Labs Research