A147621 as tables, graphs or sounds

A147621 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`4`
`5`		`26`
`6`		`120`
`7`		`455`
`8`		`1456`
`9`		`4122`
`10`		`10608`
`11`		`25194`
`12`		`55980`
`13`		`117572`
`14`		`235144`
`15`		`450681`
`16`		`832048`
`17`		`1485800`
`18`		`2575368`
`19`		`4345965`
`20`		`7158060`
`21`		`11532402`
`22`		`18209100`
`23`		`28224105`
`24`		`43008120`
`25`		`64512240`
`26`		`95365920`
`27`		`139075245`
`28`		`200268432`
`29`		`284997384`
`30`		`401107356`

[0,0,0,0,4,26,120,455,1456,4122,10608,25194,55980, 117572,235144,450681,832048,1485800,2575368, 4345965,7158060,11532402,18209100,28224105, 43008120,64512240,95365920,139075245,200268432, 284997384,401107356]

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research