A038199 as tables, graphs or sounds

A038199 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`12`
`5`		`30`
`6`		`54`
`7`		`126`
`8`		`240`
`9`		`504`
`10`		`990`
`11`		`2046`
`12`		`4020`
`13`		`8190`
`14`		`16254`
`15`		`32730`
`16`		`65280`
`17`		`131070`
`18`		`261576`
`19`		`524286`
`20`		`1047540`
`21`		`2097018`
`22`		`4192254`
`23`		`8388606`
`24`		`16772880`
`25`		`33554400`
`26`		`67100670`
`27`		`134217216`
`28`		`268419060`
`29`		`536870910`
`30`		`1073708010`
`31`		`2147483646`

[1,2,6,12,30,54,126,240,504,990,2046,4020,8190, 16254,32730,65280,131070,261576,524286,1047540, 2097018,4192254,8388606,16772880,33554400, 67100670,134217216,268419060,536870910,1073708010, 2147483646]

Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research