A082138 as tables, graphs or sounds

A082138 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`20`
`3`		`80`
`4`		`280`
`5`		`896`
`6`		`2688`
`7`		`7680`
`8`		`21120`
`9`		`56320`
`10`		`146432`
`11`		`372736`
`12`		`931840`
`13`		`2293760`
`14`		`5570560`
`15`		`13369344`
`16`		`31752192`
`17`		`74711040`
`18`		`174325760`
`19`		`403701760`
`20`		`928514048`
`21`		`2122317824`
`22`		`4823449600`
`23`		`10905190400`
`24`		`24536678400`
`25`		`54962159616`
`26`		`122607894528`

[1,4,20,80,280,896,2688,7680,21120,56320,146432, 372736,931840,2293760,5570560,13369344,31752192, 74711040,174325760,403701760,928514048,2122317824, 4823449600,10905190400,24536678400,54962159616, 122607894528]

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

AT&T Labs Research