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A153471 1/8 of the number of 8-colorings of a planar n X n X n triangular grid. 1
1, 42, 9072, 10078992, 57596549472, 1692939438332352, 255948135446478408192, 199034383110302504406200832, 796104049107763839322466439293952, 16378613975511111709055661675911519311872 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

8th row of A182797/8.

Sequence in context: A101630 A005791 A167668 * A006699 A109817 A159417

Adjacent sequences:  A153468 A153469 A153470 * A153472 A153473 A153474

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Dec 27 2008

EXTENSIONS

a(8)-a(10) from Alois P. Heinz (heinz(AT)hs-heilbronn.de), Dec 03 2010

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Last modified February 14 16:32 EST 2012. Contains 205635 sequences.