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A195802 Number of triangular nXnXn 0..5 arrays with all rows and diagonals having the same length having the same sum, with corners zero 0
1, 1, 6, 216, 5052, 1274808, 6711447312 (list; graph; refs; listen; history; text; internal format)
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

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Last modified November 27 21:32 EST 2020. Contains 338684 sequences. (Running on oeis4.)