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

1, 4, 22, 200, 2921, 67529, 2502327, 149148042, 14187953164, 2166282171177, 529836175417335, 207601280437878258, 130373625773755053650

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: A002728 A364624 A062494 * A303330 A280828 A103437

Adjacent sequences: A183271 A183272 A183273 * A183275 A183276 A183277

Keyword

nonn

Author

R. H. Hardin Jan 03 2011

Status

approved