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A269934
Number of nX4 0..6 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling six exactly once.
1
756, 1213836, 755009274, 399002850360, 193171242190020, 88942337408262936, 39591200828582988102, 17206536333078160595304, 7344924168583134203517654, 3091899703680951440763165408, 1287126422247369227744582964456
OFFSET
1,1
COMMENTS
Column 4 of A269937.
FORMULA
Empirical recurrence of order 64 (see link above)
EXAMPLE
Some solutions for n=1
..2..4..5..3. .1..6..2..4. .2..3..6..0. .3..1..5..4. .5..0..5..1
CROSSREFS
Cf. A269937.
Sequence in context: A035853 A269286 A289570 * A269898 A291864 A173507
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 08 2016
STATUS
approved