A077445 as tables, graphs or sounds

A077445 formatted as a simple table:

`n`		`a(n)`
`1`		`4`
`2`		`20`
`3`		`116`
`4`		`676`
`5`		`3940`
`6`		`22964`
`7`		`133844`
`8`		`780100`
`9`		`4546756`
`10`		`26500436`
`11`		`154455860`
`12`		`900234724`
`13`		`5246952484`
`14`		`30581480180`
`15`		`178241928596`
`16`		`1038870091396`
`17`		`6054978619780`
`18`		`35291001627284`
`19`		`205691031143924`
`20`		`1198855185236260`

[4,20,116,676,3940,22964,133844,780100,4546756, 26500436,154455860,900234724,5246952484, 30581480180,178241928596,1038870091396, 6054978619780,35291001627284,205691031143924, 1198855185236260]

Last modified December 8 08:13 EST 2009. Contains 170430 sequences.

AT&T Labs Research