A148574 as tables, graphs or sounds

A148574 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`3`
`3`		`6`
`4`		`20`
`5`		`49`
`6`		`172`
`7`		`484`
`8`		`1732`
`9`		`5194`
`10`		`19061`
`11`		`59840`
`12`		`222265`
`13`		`722995`
`14`		`2707778`
`15`		`9031024`
`16`		`34126550`
`17`		`116009638`
`18`		`440855651`
`19`		`1523827413`
`20`		`5816083375`
`21`		`20364473133`
`22`		`78075605101`
`23`		`276294402102`
`24`		`1062737326830`
`25`		`3796951739926`
`26`		`14643791215968`
`27`		`52733250282433`
`28`		`203923018220654`
`29`		`739335703065172`
`30`		`2865104006790009`

[1,1,3,6,20,49,172,484,1732,5194,19061,59840, 222265,722995,2707778,9031024,34126550,116009638, 440855651,1523827413,5816083375,20364473133, 78075605101,276294402102,1062737326830, 3796951739926,14643791215968,52733250282433, 203923018220654,739335703065172,2865104006790009]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research