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 A154042 Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 4 X 4 X 4 subtriangle summing to 4. 0
 715, 3278, 7090, 8188, 5593, 4377, 1618, 601, 228, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220, 220 (list; graph; refs; listen; history; text; internal format)
 OFFSET 4,1 COMMENTS Value 220 starts at n=13 and continues through at least n=60. LINKS EXAMPLE Maximal zeros solution for n=13 ..............0 .............0.0 ............0.0.2 ...........0.2.0.0 ..........2.0.0.0.0 .........0.0.0.0.2.0 ........0.0.0.2.0.0.0 .......0.0.2.0.0.0.0.2 ......0.2.0.0.0.0.2.0.0 .....2.0.0.0.0.2.0.0.0.0 ....0.0.0.0.2.0.0.0.0.2.0 ...0.0.0.2.0.0.0.0.2.0.0.0 ..0.0.2.0.0.0.0.2.0.0.0.0.2 CROSSREFS Sequence in context: A214186 A255788 A029565 * A027809 A222912 A266107 Adjacent sequences:  A154039 A154040 A154041 * A154043 A154044 A154045 KEYWORD nonn AUTHOR R. H. Hardin Jan 04 2009 STATUS approved

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Last modified December 13 22:48 EST 2019. Contains 329974 sequences. (Running on oeis4.)