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A096581
Number of solid partitions non-symmetric under L^2 (L= 'time-lapse' symmetry operation) on solid partitions.
8
0, 2, 4, 12, 28, 68, 150, 336, 724, 1550, 3234, 6688, 13590, 27354, 54334
OFFSET
1,2
COMMENTS
By definition, A000293=A096580 + 2*A096581.
EXAMPLE
Solid partition [{{3,1,1,1},{3}},{{2,1}},{{1}},{{1}},{{1}}] lapses (L) into
[{{4,1},{2},{1},{1},{1}},{{1,1},{1}},{{1,1}}], then into
[{{2,1,1,1,1},{2,1},{2}},{{1,1}},{{1}},{{1}}], further into
[{{5,2,1},{2},{1},{1}},{{1,1,1}}] and returns after L^4 to
[{{3,1,1,1},{3}},{{2,1}},{{1}},{{1}},{{1}}]
MATHEMATICA
See link above.
KEYWORD
more,nonn
AUTHOR
Wouter Meeussen, Jun 27 2004
STATUS
approved