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A278097
Number of nX4 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
1
0, 58, 2996, 165408, 8817738, 469476315, 24968293789, 1327640457829, 70590643428412, 3753257087015148, 199557480575235203, 10610292692535605424, 564139654771938009044, 29994793111068876818904, 1594795889617184754313078
OFFSET
1,2
COMMENTS
Column 4 of A278099.
LINKS
EXAMPLE
Some solutions for n=4
..0..1..2..3. .0..1..0..3. .0..1..2..3. .0..1..2..1. .0..2..3..2
..1..1..1..0. .0..2..2..2. .2..1..1..0. .3..0..3..2. .1..1..0..1
..2..3..0..3. .2..3..0..1. .3..0..2..3. .3..2..3..0. .1..3..1..0
..0..1..2..1. .1..2..1..0. .2..1..2..1. .1..2..2..1. .2..2..2..3
CROSSREFS
Cf. A278099.
Sequence in context: A280111 A281031 A225352 * A299467 A334935 A207278
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 12 2016
STATUS
approved