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A240361
Number of nX4 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4
1
16, 188, 1693, 13846, 99412, 663122, 4069449, 23273667, 125118158, 638885869, 3112031883, 14542135543, 65459603510, 284932363144, 1202883300068, 4937067745039, 19738795196797, 76995496434084, 293404872610496
OFFSET
1,1
COMMENTS
Column 4 of A240364
FORMULA
Empirical polynomial of degree 80 (see link above)
EXAMPLE
Some solutions for n=4
..3..1..0..0....3..3..0..1....0..3..1..3....0..0..3..1....0..3..3..1
..0..2..0..0....3..3..0..1....3..3..2..0....0..3..3..2....0..0..3..2
..3..3..0..0....3..3..1..2....0..3..3..2....3..3..2..3....0..0..3..2
..3..2..0..1....0..2..2..3....3..1..3..2....3..3..0..1....3..3..0..0
CROSSREFS
Sequence in context: A021049 A067308 A016244 * A016292 A231834 A181277
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 04 2014
STATUS
approved