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A183274 Half the number of nXnXn triangular binary arrays with every element having a neighboring 1-count differing from its neighboring 0-count by two or less 0
1, 4, 22, 200, 2921, 67529, 2502327, 149148042, 14187953164, 2166282171177, 529836175417335, 207601280437878258, 130373625773755053650 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Some solutions for 4X4X4 with a(1,1)=0

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

....1.1......0.0......0.0......1.0......1.0......0.1......0.1......0.1

...1.0.0....1.1.1....1.1.1....0.1.0....1.1.0....1.1.0....0.1.0....0.1.0

..1.0.1.1..0.1.1.0..0.0.1.0..0.1.1.0..0.0.1.1..1.1.0.0..1.1.1.0..0.1.1.0

CROSSREFS

Sequence in context: A203120 A002728 A062494 * A303330 A280828 A103437

Adjacent sequences:  A183271 A183272 A183273 * A183275 A183276 A183277

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2011

STATUS

approved

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Last modified August 5 18:00 EDT 2021. Contains 346488 sequences. (Running on oeis4.)