A161881 as tables, graphs or sounds

A161881 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`8`
`4`		`46`
`5`		`333`
`6`		`2822`
`7`		`26884`
`8`		`280778`
`9`		`3162129`
`10`		`37962174`
`11`		`481796692`
`12`		`6424120440`
`13`		`89561323131`
`14`		`1300606338522`
`15`		`19614272779492`
`16`		`306422062160964`
`17`		`4948682216714809`
`18`		`82474329755007710`
`19`		`1416291364674413764`

[1,1,2,8,46,333,2822,26884,280778,3162129, 37962174,481796692,6424120440,89561323131, 1300606338522,19614272779492,306422062160964, 4948682216714809,82474329755007710, 1416291364674413764]

Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research