A142988 as tables, graphs or sounds

A142988 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`17`
`4`		`96`
`5`		`696`
`6`		`5448`
`7`		`49752`
`8`		`492480`
`9`		`5457600`
`10`		`65128320`
`11`		`850296960`
`12`		`11864240640`
`13`		`178442611200`
`14`		`2848854758400`
`15`		`48517709184000`
`16`		`872011090944000`
`17`		`16589133517824000`
`18`		`331426982928384000`
`19`		`6966369015201792000`

[1,3,17,96,696,5448,49752,492480,5457600,65128320, 850296960,11864240640,178442611200,2848854758400, 48517709184000,872011090944000,16589133517824000, 331426982928384000,6966369015201792000]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research