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 A154045 Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 3 X 3 X 3 subtriangle summing to 5. 0
 252, 1304, 3408, 5277, 7873, 6195, 3852, 2331, 1803, 1728, 1968, 1728, 1728, 1872, 1728, 1728, 1864, 1728, 1728, 1872, 1728, 1728, 1968, 1728, 1728, 1872, 1728, 1728, 1864, 1728, 1728, 1872, 1728, 1728, 1968, 1728, 1728, 1872, 1728, 1728, 1864, 1728 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,1 COMMENTS Pattern 1728 1968 1728 1728 1872 1728 1728 1864 1728 1728 1872 1728 starts at n=12 and continues through at least n=55. LINKS EXAMPLE Maximal zeros solution for n=12 .............0 ............0.2 ...........3.0.0 ..........0.1.1.1 .........0.1.0.2.1 ........1.1.2.0.0.1 .......2.1.0.0.3.0.0 ......0.0.1.2.0.0.2.2 .....1.1.1.1.0.2.0.1.0 ....0.2.1.0.1.1.1.1.0.1 ...2.0.0.1.2.0.1.0.2.1.1 ..2.0.1.2.0.0.2.1.0.1.1.0 CROSSREFS Sequence in context: A275315 A184505 A184499 * A172223 A154073 A166783 Adjacent sequences:  A154042 A154043 A154044 * A154046 A154047 A154048 KEYWORD nonn AUTHOR R. H. Hardin Jan 04 2009 STATUS approved

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Last modified December 12 12:50 EST 2019. Contains 329958 sequences. (Running on oeis4.)