A007578 as tables, graphs or sounds

A007578 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`4`
`4`		`10`
`5`		`26`
`6`		`76`
`7`		`232`
`8`		`763`
`9`		`2611`
`10`		`9415`
`11`		`35135`
`12`		`136335`
`13`		`544623`
`14`		`2242618`
`15`		`9463508`
`16`		`40917803`
`17`		`180620411`
`18`		`813405580`
`19`		`3728248990`
`20`		`17377551032`
`21`		`82232982872`
`22`		`394742985974`
`23`		`1919885633178`
`24`		`9453682648281`
`25`		`47086636037601`

[1,2,4,10,26,76,232,763,2611,9415,35135,136335, 544623,2242618,9463508,40917803,180620411, 813405580,3728248990,17377551032,82232982872, 394742985974,1919885633178,9453682648281, 47086636037601]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research