A010904 as tables, graphs or sounds

A010904 formatted as a simple table:

`n`		`a(n)`
`0`		`4`
`1`		`14`
`2`		`49`
`3`		`172`
`4`		`604`
`5`		`2121`
`6`		`7448`
`7`		`26154`
`8`		`91841`
`9`		`322504`
`10`		`1132488`
`11`		`3976785`
`12`		`13964668`
`13`		`49037590`
`14`		`172197809`
`15`		`604680724`
`16`		`2123364868`
`17`		`7456295833`
`18`		`26183134320`
`19`		`91943310482`
`20`		`322863269121`
`21`		`1133749589840`
`22`		`3981215131600`

[4,14,49,172,604,2121,7448,26154,91841,322504, 1132488,3976785,13964668,49037590,172197809, 604680724,2123364868,7456295833,26183134320, 91943310482,322863269121,1133749589840, 3981215131600]

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

AT&T Labs Research