A020493 as tables, graphs or sounds

A020493 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`15`
`4`		`30`
`5`		`35`
`6`		`56`
`7`		`70`
`8`		`78`
`9`		`105`
`10`		`140`
`11`		`168`
`12`		`190`
`13`		`210`
`14`		`248`
`15`		`264`
`16`		`357`
`17`		`420`
`18`		`570`
`19`		`616`
`20`		`630`
`21`		`714`
`22`		`744`
`23`		`812`
`24`		`840`
`25`		`910`
`26`		`1045`
`27`		`1240`
`28`		`1485`
`29`		`1672`
`30`		`1848`
`31`		`2090`
`32`		`2214`
`33`		`2436`
`34`		`2580`
`35`		`2730`
`36`		`3080`
`37`		`3135`
`38`		`3339`
`39`		`3596`
`40`		`3720`
`41`		`3956`
`42`		`4064`
`43`		`4180`
`44`		`4522`
`45`		`4674`
`46`		`5016`
`47`		`5049`
`48`		`5278`
`49`		`5396`

[1,3,15,30,35,56,70,78,105,140,168,190,210,248, 264,357,420,570,616,630,714,744,812,840,910,1045, 1240,1485,1672,1848,2090,2214,2436,2580,2730,3080, 3135,3339,3596,3720,3956,4064,4180,4522,4674,5016, 5049,5278,5396]

Last modified December 13 23:45 EST 2009. Contains 170824 sequences.

AT&T Labs Research