A028230 as tables, graphs or sounds

A028230 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`15`
`3`		`209`
`4`		`2911`
`5`		`40545`
`6`		`564719`
`7`		`7865521`
`8`		`109552575`
`9`		`1525870529`
`10`		`21252634831`
`11`		`296011017105`
`12`		`4122901604639`
`13`		`57424611447841`
`14`		`799821658665135`
`15`		`11140078609864049`
`16`		`155161278879431551`
`17`		`2161117825702177665`

[1,15,209,2911,40545,564719,7865521,109552575, 1525870529,21252634831,296011017105,4122901604639, 57424611447841,799821658665135,11140078609864049, 155161278879431551,2161117825702177665]

Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

AT&T Labs Research