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A153953 Number of planar n X n X n binary triangular grids symmetric under 120 degree rotation with no more than 7 ones in any 4 X 4 X 4 subtriangle. 0
1, 2, 2, 4, 14, 27, 101, 792, 2945, 22285, 347018, 2474658, 35967994, 1067132131, 14741727949, 415083462852, 23780332109409, 637547853540004, 34814820669689930 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A153956 A153962 A261980 * A019072 A019073 A153959
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 03 2009
STATUS
approved

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)