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A270261 Number of 6X6X6 triangular 0..n arrays with some element plus some adjacent element totalling n exactly once. 1
0, 40020, 534438768, 302595682944, 67475902622400, 4283012188676772, 154159188959801952, 3105816183187898208, 44275679666499046080, 457028430985003084500, 3755534623771656954960, 25194187795191181725600 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A270256.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..14

EXAMPLE

Some solutions for n=2

.......2............2............2............1............2............2

......1.2..........1.2..........0.1..........0.0..........2.2..........2.1

.....1.2.2........2.2.2........0.0.0........0.0.0........2.1.2........1.2.2

....2.2.2.1......1.1.2.1......0.0.0.0......0.1.0.0......2.2.2.1......2.2.2.2

...2.1.2.2.2....2.2.2.2.2....0.0.0.0.0....1.0.0.0.1....2.2.2.2.1....1.1.2.2.2

..1.2.2.2.1.2..2.2.2.2.2.2..0.1.0.0.0.1..2.1.0.0.0.0..1.2.2.2.2.2..2.2.2.1.2.2

CROSSREFS

Cf. A270256.

Sequence in context: A106772 A015328 A251970 * A272889 A126104 A031645

Adjacent sequences:  A270258 A270259 A270260 * A270262 A270263 A270264

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 14 2016

STATUS

approved

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Last modified April 9 17:48 EDT 2020. Contains 333361 sequences. (Running on oeis4.)