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 A154063 Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 4 X 4 X 4 subtriangle summing to 7. 0
 112, 744, 469, 1180, 477, 951, 243, 382, 84, 154, 57, 136, 68, 106, 56, 136, 56, 136, 56, 136, 56, 106, 68, 136, 56, 106, 56, 136, 56, 106, 56, 136, 68, 106, 56, 136, 56, 136, 56, 136, 56, 106, 68, 136, 56, 106, 56, 136, 56, 106, 56, 136, 68, 106, 56, 136, 56 (list; graph; refs; listen; history; text; internal format)
 OFFSET 4,1 LINKS EXAMPLE Maximal zeros solution for n=15 ................0 ...............0.0 ..............0.3.0 .............2.0.0.2 ............0.0.2.0.0 ...........1.0.1.1.0.1 ..........0.2.0.1.0.2.0 .........2.1.0.1.1.0.1.2 ........0.0.1.0.2.0.1.0.0 .......0.0.2.1.0.0.1.2.0.0 ......1.2.0.0.0.3.0.0.0.2.1 .....2.0.0.2.1.0.0.1.2.0.0.2 ....0.1.1.0.1.0.2.0.1.0.1.1.0 ...0.0.1.1.1.0.1.1.0.1.1.1.0.0 ..0.0.1.2.0.0.0.3.0.0.0.2.1.0.0 CROSSREFS Sequence in context: A221798 A340574 A189544 * A205250 A047631 A264891 Adjacent sequences: A154060 A154061 A154062 * A154064 A154065 A154066 KEYWORD nonn AUTHOR R. H. Hardin Jan 04 2009 STATUS approved

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Last modified February 3 04:55 EST 2023. Contains 360024 sequences. (Running on oeis4.)