A024500 as tables, graphs or sounds

A024500 formatted as a simple table:

`n`		`a(n)`
`1`		`2`
`2`		`1`
`3`		`2`
`4`		`4`
`5`		`10`
`6`		`25`
`7`		`70`
`8`		`201`
`9`		`600`
`10`		`1847`
`11`		`5830`
`12`		`18778`
`13`		`61542`
`14`		`204676`
`15`		`689411`
`16`		`2347970`
`17`		`8074762`
`18`		`28009676`
`19`		`97909318`
`20`		`344616322`
`21`		`1220539397`
`22`		`4347311908`
`23`		`15564141262`
`24`		`55985423060`
`25`		`202256970300`
`26`		`733607297260`
`27`		`2670698800614`
`28`		`9755982909133`

[2,1,2,4,10,25,70,201,600,1847,5830,18778,61542, 204676,689411,2347970,8074762,28009676,97909318, 344616322,1220539397,4347311908,15564141262, 55985423060,202256970300,733607297260, 2670698800614,9755982909133]

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

AT&T Labs Research