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Search: id:A153924
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A153924 Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 3 ones in any 4 X 4 X 4 subtriangle. +0
1
1, 2, 50178, 330289, 4142724, 38758787, 721406196, 10013654728, 271477291887, 5511387919570, 217444939703686, 6427549653424203, 370935313492909781 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A106025 A157959 A094213 this_sequence A059764 A052427 A051833

Adjacent sequences: A153921 A153922 A153923 this_sequence A153925 A153926 A153927

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Jan 03 2009

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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