A137981 as tables, graphs or sounds

A137981 formatted as a simple table:

`n`		`a(n)`
`1`		`2`
`2`		`-3`
`3`		`30`
`4`		`-92`
`5`		`-120`
`6`		`696`
`7`		`720`
`8`		`-8340`
`9`		`-5220`
`10`		`24120`
`11`		`40296`
`12`		`103680`
`13`		`-722160`
`14`		`-289440`
`15`		`1216080`
`16`		`-756000`
`17`		`10579800`
`18`		`13003200`
`19`		`-73306800`
`20`		`-21281400`
`21`		`86350320`
`22`		`-71284800`
`23`		`-268531200`
`24`		`2283140160`
`25`		`1799884800`
`26`		`-9170280000`
`27`		`-2072407680`
`28`		`8319024000`
`29`		`2438553600`
`30`		`-41653241280`

[2,-3,30,-92,-120,696,720,-8340,-5220,24120,40296, 103680,-722160,-289440,1216080,-756000,10579800, 13003200,-73306800,-21281400,86350320,-71284800, -268531200,2283140160,1799884800,-9170280000, -2072407680,8319024000,2438553600,-41653241280]

Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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