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A153946
Number of planar n X n X n binary triangular grids symmetric both under 120 degree rotation and reflection with no more than 5 ones in any 5 X 5 X 5 subtriangle.
0
1, 2, 2, 3, 4, 4, 8, 28, 30, 85, 295, 509, 1187, 7245, 11515, 45155, 251258, 668550, 2564348, 22927188, 58681071, 365101542, 3245521086, 13341587072, 79655532465, 1165655712148, 4589765439206, 44705564743713, 626481583312972
OFFSET
0,2
CROSSREFS
Sequence in context: A036814 A137776 A262699 * A036810 A036809 A111263
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 03 2009
STATUS
approved