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A154059 Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 4 X 4 X 4 subtriangle summing to 6. 0
5005, 42379, 161481, 327971, 465436, 588412, 315265, 126740, 40993, 9833, 4891, 3523, 2084, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080, 2080 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

COMMENTS

Value 2080 starts at n=17 and continues through at least n=50.

LINKS

Table of n, a(n) for n=4..42.

EXAMPLE

Maximal zeros solution for n=17

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

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

................0.0.3

...............0.3.0.0

..............3.0.0.0.0

.............0.0.0.0.3.0

............0.0.0.3.0.0.0

...........0.0.3.0.0.0.0.3

..........0.3.0.0.0.0.3.0.0

.........3.0.0.0.0.3.0.0.0.0

........0.0.0.0.3.0.0.0.0.3.0

.......0.0.0.3.0.0.0.0.3.0.0.0

......0.0.3.0.0.0.0.3.0.0.0.0.3

.....0.3.0.0.0.0.3.0.0.0.0.3.0.0

....3.0.0.0.0.3.0.0.0.0.3.0.0.0.0

...0.0.0.0.3.0.0.0.0.3.0.0.0.0.3.0

..0.0.0.3.0.0.0.0.3.0.0.0.0.3.0.0.0

CROSSREFS

Sequence in context: A280879 A067226 A249081 * A138637 A140921 A295459

Adjacent sequences:  A154056 A154057 A154058 * A154060 A154061 A154062

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 04 2009

STATUS

approved

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Last modified January 25 14:42 EST 2021. Contains 340416 sequences. (Running on oeis4.)