A026650 as tables, graphs or sounds

A026650 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`6`
`3`		`21`
`4`		`108`
`5`		`370`
`6`		`1908`
`7`		`6587`
`8`		`34248`
`9`		`119142`
`10`		`623700`
`11`		`2182818`
`12`		`11487528`
`13`		`40391988`
`14`		`213451560`
`15`		`753295635`
`16`		`3993910416`
`17`		`14136717574`
`18`		`75152083716`
`19`		`266650874678`
`20`		`1420670333640`
`21`		`5050926317724`
`22`		`26960309526744`
`23`		`96015725922014`

[1,6,21,108,370,1908,6587,34248,119142,623700, 2182818,11487528,40391988,213451560,753295635, 3993910416,14136717574,75152083716,266650874678, 1420670333640,5050926317724,26960309526744, 96015725922014]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research