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A257017
T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum
4
15066, 311364, 311364, 6508512, 14776336, 6508512, 136048896, 717382656, 717382656, 136048896, 2834352000, 34828517376, 82198167552, 34828517376, 2834352000, 59049000000, 1679616000000, 9418319069184, 9418319069184
OFFSET
1,1
COMMENTS
Table starts
.....15066......311364.......6508512........136048896.........2834352000
....311364....14776336.....717382656......34828517376......1679616000000
...6508512...717382656...82198167552....9418319069184...1067360882688000
.136048896.34828517376.9418319069184.2546899517177856.678285544965341184
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 9]
k=2: [order 27]
EXAMPLE
Some solutions for n=1 k=4
..0..0..0..2..0..2....0..1..0..1..0..1....0..2..0..2..0..2....0..0..0..1..0..0
..0..0..0..0..1..0....0..0..0..0..0..0....0..0..0..0..1..0....0..0..0..1..1..1
..2..1..0..2..1..1....2..1..0..0..1..1....0..1..1..0..2..1....1..1..2..1..1..1
CROSSREFS
Sequence in context: A187423 A186215 A347077 * A257014 A237335 A206410
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Apr 14 2015
STATUS
approved