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A153555 Number of planar n X n X n binary triangular grids with no more than 1 one in any 4 X 4 X 4 subtriangle. 0
1, 2, 4, 7, 11, 29, 94, 305, 942, 3700, 17914, 96925, 550823, 3593444, 27564919, 242155962, 2360399737, 25960549046, 327176065746, 4712254866397, 76708072697647, 1412166412163055, 29553071463431116, 703960430349591146 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..23.

CROSSREFS

Sequence in context: A304040 A261145 A277339 * A259588 A058103 A346268

Adjacent sequences:  A153552 A153553 A153554 * A153556 A153557 A153558

KEYWORD

nonn

AUTHOR

R. H. Hardin,  Jan 01 2009

STATUS

approved

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Last modified November 28 19:48 EST 2021. Contains 349415 sequences. (Running on oeis4.)