A051893 as tables, graphs or sounds

A051893 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`5`
`4`		`50`
`5`		`850`
`6`		`22100`
`7`		`817700`
`8`		`40885000`
`9`		`2657525000`
`10`		`217917050000`
`11`		`22009622050000`
`12`		`2685173890100000`
`13`		`389350214064500000`
`14`		`66189536390965000000`
`15`		`13039338669020105000000`

[1,1,5,50,850,22100,817700,40885000,2657525000, 217917050000,22009622050000,2685173890100000, 389350214064500000,66189536390965000000, 13039338669020105000000]

Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

AT&T Labs Research