editing
approved
editing
approved
1, 392, 5765144, 3181273031384, 65865668592143803208, 51166372312341376389944811656, 1491342882335672198457853495232503998152, 1630939089590623060636571472516037785233254346536136, 66921448813902442793929754551432219305219935812987218443538247160
a(6)-a(89) from Alois P. Heinz, May 03 2012
1, 392, 5765144, 3181273031384, 65865668592143803208, 51166372312341376389944811656, 1491342882335672198457853495232503998152, 1630939089590623060636571472516037785233254346536136
a(6)-a(8) from Alois P. Heinz, May 03 2012
approved
editing
_R. H. Hardin (rhhardin(AT)att.net), _, Feb 24 2002
nonn,new
nonn
Ron R. H. Hardin (rhhardin(AT)att.net), Feb 24 2002
nonn,new
nonn
Ron Hardin (rhhrhhardin(AT)cadenceatt.comnet), Feb 24 2002
1/9 the number of colorings of an n X n staggered hexagonal array with 9 colors.
1, 392, 5765144, 3181273031384, 65865668592143803208
1,2
Terms for rhombic- and staggered- hexagonal arrays are the same for n in 1..4.
nonn
Ron Hardin (rhh(AT)cadence.com), Feb 24 2002
approved