A195802 Number of triangular nXnXn 0..5 arrays with all rows and diagonals having the same length having the same sum, with corners zero

1, 1, 6, 216, 5052, 1274808, 6711447312

Offset

1,3

Comments

Column 5 of A195805

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=5
......0..........0..........0..........0..........0..........0..........0
.....4.3........4.3........1.2........3.2........5.4........2.1........4.5
....4.4.3......4.2.3......5.5.2......1.4.0......3.5.4......4.0.5......2.1.1
...3.2.3.5....3.0.1.5....1.2.5.3....2.2.3.4....5.4.3.5....1.2.1.1....4.2.3.4
..0.4.5.2.0..0.4.5.2.0..0.2.5.0.0..0.3.2.1.0..0.4.5.4.0..0.2.3.2.0..0.5.0.5.0

Crossrefs

Sequence in context: A030265 A275567 A007221 * A145249 A154023 A013711

Adjacent sequences: A195799 A195800 A195801 * A195803 A195804 A195805

Keyword

nonn

Author

R. H. Hardin Sep 23 2011

Status

approved