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A154056 Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 3 X 3 X 3 subtriangle summing to 6. 0
462, 3027, 9998, 20114, 39391, 39343, 30768, 18131, 8308, 5783, 7858, 5661, 6349, 7852, 5661, 5661, 8702, 5661, 5661, 7852, 6349, 5661, 7852, 5661, 6349, 7852, 5661, 5661, 8702, 5661, 5661, 7852, 6349, 5661, 7852, 5661, 6349, 7852, 5661, 5661, 8702 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..43.

EXAMPLE

Maximal zeros solution for n=14

...............0

..............0.0

.............0.3.3

............3.0.0.0

...........0.0.3.0.0

..........0.3.0.0.3.3

.........3.0.0.3.0.0.0

........0.0.3.0.0.3.0.0

.......0.3.0.0.3.0.0.3.3

......3.0.0.3.0.0.3.0.0.0

.....0.0.3.0.0.3.0.0.3.0.0

....0.3.0.0.3.0.0.3.0.0.3.3

...3.0.0.3.0.0.3.0.0.3.0.0.0

..0.0.3.0.0.3.0.0.3.0.0.3.0.0

CROSSREFS

Sequence in context: A158627 A267567 A267557 * A236350 A027816 A027823

Adjacent sequences:  A154053 A154054 A154055 * A154057 A154058 A154059

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2009

STATUS

approved

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Last modified January 22 10:48 EST 2021. Contains 340362 sequences. (Running on oeis4.)