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 A154046 Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 4 X 4 X 4 subtriangle summing to 5. 0
 4, 14, 23, 19, 11, 38, 9, 12, 11, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7, 4, 7, 10, 7 (list; graph; refs; listen; history; text; internal format)
 OFFSET 4,1 COMMENTS Pattern 4 7 10 7 starts at n=13 and continues through at least n=60. LINKS EXAMPLE Maximal zeros solution for n=13 ..............2 .............0.0 ............0.1.0 ...........0.1.1.0 ..........2.0.0.0.2 .........0.0.1.1.0.0 ........0.1.0.1.0.1.0 .......0.1.1.0.0.1.1.0 ......2.0.0.0.2.0.0.0.2 .....0.0.1.1.0.0.1.1.0.0 ....0.1.0.1.0.1.0.1.0.1.0 ...0.1.1.0.0.1.1.0.0.1.1.0 ..2.0.0.0.2.0.0.0.2.0.0.0.2 CROSSREFS Sequence in context: A199987 A201016 A317734 * A000054 A063616 A213399 Adjacent sequences:  A154043 A154044 A154045 * A154047 A154048 A154049 KEYWORD nonn AUTHOR R. H. Hardin Jan 04 2009 STATUS approved

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Last modified December 7 17:41 EST 2019. Contains 329847 sequences. (Running on oeis4.)