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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

Table of n, a(n) for n=4..60.

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.)