A028027 as tables, graphs or sounds

A028027 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`20`
`2`		`257`
`3`		`2716`
`4`		`25809`
`5`		`230244`
`6`		`1975009`
`7`		`16524332`
`8`		`136058417`
`9`		`1108775668`
`10`		`8975764161`
`11`		`72350153148`
`12`		`581586939025`
`13`		`4666887733892`
`14`		`37407122372513`
`15`		`299621333407564`
`16`		`2398809490126833`
`17`		`19199738367402516`

[1,20,257,2716,25809,230244,1975009,16524332, 136058417,1108775668,8975764161,72350153148, 581586939025,4666887733892,37407122372513, 299621333407564,2398809490126833, 19199738367402516]

Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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