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A270601 Number of nXnXn triangular 0..3 arrays with some element plus some adjacent element totalling 3+1 or 3-1 exactly once. 1
0, 36, 312, 8808, 443088, 44168712, 8708857332, 3419936238138, 2684843924352546, 4225663875817457520, 13361604903790701175254, 85018381019087710839691584, 1089960283319115969602380739838, 28183582557929760913921018421335722 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A270606.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..15

EXAMPLE

Some solutions for n=4

.....0........3........3........1........3........3........3........1

....0.3......0.2......3.3......3.0......0.3......0.3......3.0......3.0

...1.0.0....3.3.3....0.2.3....3.0.3....0.0.0....0.3.3....3.3.3....0.0.3

..3.0.3.3..3.3.0.0..0.3.3.3..0.3.0.0..0.1.1.0..1.3.3.0..2.0.0.0..0.0.0.0

CROSSREFS

Cf. A270606.

Sequence in context: A219633 A219387 A222860 * A232828 A092643 A045786

Adjacent sequences:  A270598 A270599 A270600 * A270602 A270603 A270604

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 20 2016

STATUS

approved

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Last modified November 28 04:13 EST 2021. Contains 349400 sequences. (Running on oeis4.)