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A195800 Number of triangular nXnXn 0..3 arrays with all rows and diagonals having the same length having the same sum, with corners zero 0
1, 1, 4, 64, 496, 24928, 17528896, 3850960912 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Column 3 of A195805
LINKS
EXAMPLE
Some solutions for n=5
......0..........0..........0..........0..........0..........0..........0
.....3.3........1.0........2.0........2.2........1.0........0.1........2.0
....0.3.0......1.1.3......3.0.3......1.0.1......1.1.1......0.2.0......3.0.3
...3.3.3.3....1.2.0.0....0.0.0.2....2.0.0.2....0.1.1.1....1.2.2.0....0.0.0.2
..0.3.0.3.0..0.0.2.1.0..0.2.3.0.0..0.2.1.2.0..0.1.1.0.0..0.0.0.1.0..0.2.3.0.0
CROSSREFS
Sequence in context: A103751 A053959 A343725 * A224446 A128782 A353453
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 23 2011
STATUS
approved

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Last modified March 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)