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A153898
Number of planar n X n X n binary triangular grids symmetric both under 120-degree rotation and reflection with no more than 1 one in any 2 X 2 X 2 subtriangle.
0
1, 2, 1, 2, 4, 4, 4, 20, 12, 32, 92, 128, 192, 1340, 1080, 3984, 16104, 31168, 66032, 644436, 720896, 3702816, 20885084, 56396000, 167145024, 2277052636, 3551548720, 25448231520, 200265789844, 754613710528, 3122443069456
OFFSET
0,2
CROSSREFS
Sequence in context: A360095 A350659 A094265 * A108802 A023673 A132965
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 03 2009
STATUS
approved