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A273963
Number of nX4 0..3 arrays with no three equal values forming an isosceles right triangle, and new values introduced in 0..3 order.
0
15, 1264, 49702, 543906, 4010258, 16365681, 55643290, 210405148, 904155053, 4384022592, 21350702064, 105038486755, 514302715276, 2558243582787
OFFSET
1,1
COMMENTS
Column 4 of A273964.
EXAMPLE
Some solutions for n=3
..0..1..2..3. .0..1..0..1. .0..1..2..3. .0..1..1..0. .0..1..1..2
..3..0..3..2. .2..1..2..2. .3..0..2..1. .0..2..2..0. .2..2..0..3
..3..0..1..2. .2..3..1..0. .3..1..2..0. .0..3..1..0. .1..3..3..1
CROSSREFS
Cf. A273964.
Sequence in context: A209679 A135810 A273967 * A220179 A373858 A166330
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 05 2016
STATUS
approved