A192410 Number of nXnXn triangular binary arrays with every 1 adjacent to at most 1 other 1

2, 7, 29, 233, 2633, 47964, 1366601, 60548441, 4211296215, 457475364179, 77746107574743, 20666091342409561, 8591093418358446624, 5585965082182153010189, 5680505056847709316390907

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

Some solutions for 6X6X6
.......0............0............1............1............1............0
......0.1..........0.0..........0.1..........1.0..........0.0..........0.0
.....1.0.1........0.1.0........0.0.0........0.0.0........0.1.1........0.0.1
....0.1.0.0......0.1.0.1......0.0.0.0......0.0.0.1......1.0.0.0......0.1.0.0
...1.0.0.0.1....1.0.0.0.1....0.0.0.1.1....0.1.0.0.0....0.0.0.0.1....0.0.1.0.1
..1.0.0.0.1.0..0.0.0.0.0.0..1.0.0.0.0.0..0.1.0.1.0.0..0.0.1.1.0.0..1.1.0.0.0.0

Crossrefs

Sequence in context: A143883 A346427 A003437 * A270518 A359950 A094475

Adjacent sequences: A192407 A192408 A192409 * A192411 A192412 A192413

Keyword

nonn

Author

R. H. Hardin Jun 30 2011

Status

approved