A010974 as tables, graphs or sounds

A010974 formatted as a simple table:

`n`		`a(n)`
`21`		`1`
`22`		`22`
`23`		`253`
`24`		`2024`
`25`		`12650`
`26`		`65780`
`27`		`296010`
`28`		`1184040`
`29`		`4292145`
`30`		`14307150`
`31`		`44352165`
`32`		`129024480`
`33`		`354817320`
`34`		`927983760`
`35`		`2319959400`
`36`		`5567902560`
`37`		`12875774670`
`38`		`28781143380`
`39`		`62359143990`
`40`		`131282408400`
`41`		`269128937220`

[1,22,253,2024,12650,65780,296010,1184040,4292145, 14307150,44352165,129024480,354817320,927983760, 2319959400,5567902560,12875774670,28781143380, 62359143990,131282408400,269128937220]

Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research