A022087 as tables, graphs or sounds

A022087 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`4`
`2`		`4`
`3`		`8`
`4`		`12`
`5`		`20`
`6`		`32`
`7`		`52`
`8`		`84`
`9`		`136`
`10`		`220`
`11`		`356`
`12`		`576`
`13`		`932`
`14`		`1508`
`15`		`2440`
`16`		`3948`
`17`		`6388`
`18`		`10336`
`19`		`16724`
`20`		`27060`
`21`		`43784`
`22`		`70844`
`23`		`114628`
`24`		`185472`
`25`		`300100`
`26`		`485572`
`27`		`785672`
`28`		`1271244`
`29`		`2056916`
`30`		`3328160`
`31`		`5385076`
`32`		`8713236`

[0,4,4,8,12,20,32,52,84,136,220,356,576,932,1508, 2440,3948,6388,10336,16724,27060,43784,70844, 114628,185472,300100,485572,785672,1271244, 2056916,3328160,5385076,8713236]

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research