A002741 as tables, graphs or sounds

A002741 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`-1`
`3`		`2`
`4`		`0`
`5`		`9`
`6`		`35`
`7`		`230`
`8`		`1624`
`9`		`13209`
`10`		`120287`
`11`		`1214674`
`12`		`13469896`
`13`		`162744945`
`14`		`2128047987`
`15`		`29943053062`
`16`		`451123462672`
`17`		`7245940789073`
`18`		`123604151490591`
`19`		`2231697509543362`

[0,1,-1,2,0,9,35,230,1624,13209,120287,1214674, 13469896,162744945,2128047987,29943053062, 451123462672,7245940789073,123604151490591, 2231697509543362]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research