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A153535 Number of planar n X n X n binary triangular grids with no more than 1 one in any 5 X 5 X 5 subtriangle. 0
1, 2, 4, 7, 11, 16, 38, 113, 342, 975, 2636, 8729, 35249, 159811, 757035, 3630603, 19165047, 115453377, 782498885, 5793617152, 45722686214, 390614558026, 3684092364605, 38520543111851, 443271652337403, 5554115003205511 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..25.

CROSSREFS

Sequence in context: A108895 A146929 A146921 * A116615 A053145 A192589

Adjacent sequences:  A153532 A153533 A153534 * A153536 A153537 A153538

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 01 2009

STATUS

approved

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Last modified May 23 00:47 EDT 2022. Contains 353959 sequences. (Running on oeis4.)