A163882 - OEIS

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A163882

Number of nXnXn triangular binary arrays with all 1s connected, no 1 having more than 3 1s adjacent, and a path of 1s from peak vertex to anywhere on the bottom side

1, 3, 14, 103, 1301, 28378, 1096680, 75428721, 9231236626

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

All solutions for n=3

....1......1......1......1......1......1......1......1......1......1......1..

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

..0.1.0..0.1.0..1.1.0..0.1.1..1.1.1..1.0.0..1.0.0..1.0.1..0.1.0..1.1.0..0.1.1

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