A002874 as tables, graphs or sounds

A002874 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`8`
`3`		`42`
`4`		`268`
`5`		`1994`
`6`		`16852`
`7`		`158778`
`8`		`1644732`
`9`		`18532810`
`10`		`225256740`
`11`		`2933174842`
`12`		`40687193548`
`13`		`598352302474`
`14`		`9290859275060`
`15`		`151779798262202`
`16`		`2600663778494172`
`17`		`46609915810749130`
`18`		`871645673599372868`

[1,2,8,42,268,1994,16852,158778,1644732,18532810, 225256740,2933174842,40687193548,598352302474, 9290859275060,151779798262202,2600663778494172, 46609915810749130,871645673599372868]

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

AT&T Labs Research