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Search: id:A153553
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A153553 Number of planar n X n X n binary triangular grids with no more than 4 ones in any similarly oriented 3 X 3 X 3 subtriangle. +0
1
1, 2, 8, 57, 781, 20279, 989864, 91377864, 15933677137, 5246093512391, 3262374894683471, 3831614279502257675, 8499107956072261758908, 35605260751502551680547117, 281710507240517708494081629167 (list; graph; listen)
OFFSET

0,2
CROSSREFS

Sequence in context: A027335 A133686 A153525 this_sequence A007347 A063074 A005804

Adjacent sequences: A153550 A153551 A153552 this_sequence A153554 A153555 A153556

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Jan 01 2009

page 1

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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