A148459 as tables, graphs or sounds

A148459 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`18`
`5`		`57`
`6`		`198`
`7`		`709`
`8`		`2601`
`9`		`9864`
`10`		`38148`
`11`		`149808`
`12`		`598372`
`13`		`2419970`
`14`		`9889001`
`15`		`40838480`
`16`		`170083988`
`17`		`713613807`
`18`		`3015878875`
`19`		`12823991428`
`20`		`54829658278`
`21`		`235678930783`
`22`		`1017743418774`
`23`		`4413589486399`
`24`		`19218488856579`
`25`		`83989136588578`
`26`		`368284554761549`
`27`		`1620125911384969`
`28`		`7147971908460116`

[1,1,2,6,18,57,198,709,2601,9864,38148,149808, 598372,2419970,9889001,40838480,170083988, 713613807,3015878875,12823991428,54829658278, 235678930783,1017743418774,4413589486399, 19218488856579,83989136588578,368284554761549, 1620125911384969,7147971908460116]

Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

AT&T Labs Research