A077821 as tables, graphs or sounds

A077821 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`16`
`3`		`64`
`4`		`253`
`5`		`1000`
`6`		`3952`
`7`		`15616`
`8`		`61705`
`9`		`243820`
`10`		`963424`
`11`		`3806848`
`12`		`15042277`
`13`		`59437648`
`14`		`234860320`
`15`		`928020736`
`16`		`3666956113`
`17`		`14489511508`
`18`		`57253465072`
`19`		`226229798080`
`20`		`893918323981`
`21`		`3532204761400`
`22`		`13957058650384`
`23`		`55149545207296`
`24`		`217916425857241`
`25`		`861069089144764`

[1,4,16,64,253,1000,3952,15616,61705,243820, 963424,3806848,15042277,59437648,234860320, 928020736,3666956113,14489511508,57253465072, 226229798080,893918323981,3532204761400, 13957058650384,55149545207296,217916425857241, 861069089144764]

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

AT&T Labs Research