A028562 as tables, graphs or sounds

A028562 formatted as a simple table:

`n`		`a(n)`
`1`		`0`
`2`		`7`
`3`		`55`
`4`		`616`
`5`		`19591`
`6`		`76167`
`7`		`515515`
`8`		`749947`
`9`		`7474747`
`10`		`72999927`
`11`		`236799997632`
`12`		`769437734967`
`13`		`1900289820091`
`14`		`2998954598992`
`15`		`5170703070715`
`16`		`5934592954395`
`17`		`29175111157192`
`18`		`51175166157115`
`19`		`57154688645175`

[0,7,55,616,19591,76167,515515,749947,7474747, 72999927,236799997632,769437734967,1900289820091, 2998954598992,5170703070715,5934592954395, 29175111157192,51175166157115,57154688645175]

Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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