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A271039
Number of 7X7X7 triangular 0..n arrays with some element less than a w, nw or ne neighbor exactly once.
1
642, 56754, 2173554, 50108414, 804566180, 9790184488, 95420380090, 774600507974, 5391017644856, 32890239598008, 179007489630476, 881467345491584, 3972721376352724, 16545720243662726, 64195774252619306
OFFSET
1,1
COMMENTS
Row 7 of A271034.
LINKS
EXAMPLE
Some solutions for n=2
........0..............0..............0..............0..............0
.......0.0............0.0............0.0............0.1............0.0
......0.0.0..........0.2.2..........0.1.1..........0.1.1..........0.0.0
.....0.0.1.0........1.1.2.2........0.1.1.1........0.0.2.2........0.0.1.1
....0.1.1.1.2......1.1.2.2.2......1.1.2.1.2......0.0.2.2.2......1.1.1.1.1
...0.1.1.1.2.2....1.1.2.2.2.2....2.2.2.2.2.2....0.1.2.2.2.2....0.1.1.1.1.1
..0.2.2.2.2.2.2..1.1.2.2.2.2.2..2.2.2.2.2.2.2..0.1.2.2.2.2.2..1.2.2.2.2.2.2
CROSSREFS
Cf. A271034.
Sequence in context: A135384 A253420 A289649 * A061324 A089295 A195808
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 29 2016
STATUS
approved