A001850 as tables, graphs or sounds

A001850 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`13`
`3`		`63`
`4`		`321`
`5`		`1683`
`6`		`8989`
`7`		`48639`
`8`		`265729`
`9`		`1462563`
`10`		`8097453`
`11`		`45046719`
`12`		`251595969`
`13`		`1409933619`
`14`		`7923848253`
`15`		`44642381823`
`16`		`252055236609`
`17`		`1425834724419`
`18`		`8079317057869`
`19`		`45849429914943`
`20`		`260543813797441`

[1,3,13,63,321,1683,8989,48639,265729,1462563, 8097453,45046719,251595969,1409933619,7923848253, 44642381823,252055236609,1425834724419, 8079317057869,45849429914943,260543813797441]

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

AT&T Labs Research