A005817 as tables, graphs or sounds

A005817 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`4`
`4`		`10`
`5`		`25`
`6`		`70`
`7`		`196`
`8`		`588`
`9`		`1764`
`10`		`5544`
`11`		`17424`
`12`		`56628`
`13`		`184041`
`14`		`613470`
`15`		`2044900`
`16`		`6952660`
`17`		`23639044`
`18`		`81662152`
`19`		`282105616`
`20`		`987369656`
`21`		`3455793796`
`22`		`12228193432`
`23`		`43268992144`
`24`		`154532114800`
`25`		`551900410000`
`26`		`1986841476000`
`27`		`7152629313600`

[1,1,2,4,10,25,70,196,588,1764,5544,17424,56628, 184041,613470,2044900,6952660,23639044,81662152, 282105616,987369656,3455793796,12228193432, 43268992144,154532114800,551900410000, 1986841476000,7152629313600]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research