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A240761
Number of 2Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4
1
2, 6, 9, 42, 124, 474, 1440, 5239, 16730, 58945, 192711, 666682, 2209028, 7562090, 25254050, 85922148, 288250557, 977287148, 3287088851, 11122488393, 37465304475, 126628657804, 426895509278, 1441942470916, 4863435928395
OFFSET
1,1
COMMENTS
Row 2 of A240760
LINKS
EXAMPLE
Some solutions for n=4
..3..1..3..3....2..2..2..2....2..2..3..3....2..2..2..2....3..3..2..3
..2..2..2..1....3..1..0..3....3..1..0..2....3..3..1..3....2..0..0..1
CROSSREFS
Sequence in context: A082459 A129831 A101713 * A342317 A117541 A244060
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 12 2014
STATUS
approved