A138767 as tables, graphs or sounds

A138767 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`4`
`4`		`4`
`5`		`15`
`6`		`18`
`7`		`3`
`8`		`56`
`9`		`80`
`10`		`24`
`11`		`210`
`12`		`350`
`13`		`150`
`14`		`10`
`15`		`792`
`16`		`1512`
`17`		`840`
`18`		`120`
`19`		`3003`
`20`		`6468`
`21`		`4410`
`22`		`980`
`23`		`35`
`24`		`11440`
`25`		`27456`
`26`		`22176`
`27`		`6720`
`28`		`560`
`29`		`43758`
`30`		`115830`
`31`		`108108`
`32`		`41580`
`33`		`5670`
`34`		`126`
`35`		`167960`
`36`		`486200`
`37`		`514800`
`38`		`240240`
`39`		`46200`
`40`		`2520`

[1,1,4,4,15,18,3,56,80,24,210,350,150,10,792,1512, 840,120,3003,6468,4410,980,35,11440,27456,22176, 6720,560,43758,115830,108108,41580,5670,126, 167960,486200,514800,240240,46200,2520]

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research