A147833 as tables, graphs or sounds

A147833 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`12`
`4`		`12`
`5`		`60`
`6`		`252`
`7`		`636`
`8`		`2364`
`9`		`7932`
`10`		`25020`
`11`		`85116`
`12`		`280380`
`13`		`921084`
`14`		`3063996`
`15`		`10112892`
`16`		`33421884`
`17`		`110641404`
`18`		`365683644`
`19`		`1209311868`
`20`		`3999743292`
`21`		`13225194492`
`22`		`43735910076`
`23`		`144633607548`
`24`		`478279581756`
`25`		`1581644932860`

[1,0,0,12,12,60,252,636,2364,7932,25020,85116, 280380,921084,3063996,10112892,33421884,110641404, 365683644,1209311868,3999743292,13225194492, 43735910076,144633607548,478279581756, 1581644932860]

Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

AT&T Labs Research