A140325 as tables, graphs or sounds

A140325 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`18`
`2`		`180`
`3`		`1320`
`4`		`7920`
`5`		`41184`
`6`		`192192`
`7`		`823680`
`8`		`3294720`
`9`		`12446720`
`10`		`44808192`
`11`		`154791936`
`12`		`515973120`
`13`		`1666990080`
`14`		`5239111680`
`15`		`16066609152`
`16`		`48199827456`
`17`		`141764198400`
`18`		`409541017600`
`19`		`1163958681600`
`20`		`3259084308480`
`21`		`9001280471040`

[1,18,180,1320,7920,41184,192192,823680,3294720, 12446720,44808192,154791936,515973120,1666990080, 5239111680,16066609152,48199827456,141764198400, 409541017600,1163958681600,3259084308480, 9001280471040]

Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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