A019318 as tables, graphs or sounds

A019318 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`16`
`4`		`252`
`5`		`6814`
`6`		`244344`
`7`		`10746377`
`8`		`553319048`
`9`		`32611596056`
`10`		`2163792255680`
`11`		`159593799888052`
`12`		`12952412056879996`
`13`		`1147044793316531040`
`14`		`110066314584030859544`
`15`		`11375695977099383509351`
`16`		`1259843950257390597789296`
`17`		`148842380543159458506703546`
`18`		`18685311541775061906510072648`
`19`		`2483858381692984848273972297368`
`20`		`348545122958862200122401771463328`

[1,2,16,252,6814,244344,10746377,553319048, 32611596056,2163792255680,159593799888052, 12952412056879996,1147044793316531040, 110066314584030859544,11375695977099383509351, 1259843950257390597789296, 148842380543159458506703546, 18685311541775061906510072648, 2483858381692984848273972297368, 348545122958862200122401771463328]

Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

AT&T Labs Research