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A213697
T(n,k)=Half the number of (n+1)X(n+1) symmetric 0..k arrays with no 2X2 subblock summing to 2k
14
3, 11, 13, 28, 192, 70, 56, 1320, 7827, 529, 99, 5470, 208072, 750261, 5148, 159, 17499, 2322599, 109820000, 168382284, 68798, 240, 45892, 16537086, 4286833981, 193946752094, 88681187619, 1220409, 344, 105856, 84059234, 83545858925
OFFSET
1,1
COMMENTS
Table starts
.....3..........11...............28..................56....................99
....13.........192.............1320................5470.................17499
....70........7827...........208072.............2322599..............16537086
...529......750261........109820000..........4286833981...........83545858925
..5148...168382284.....193946752094......34389632236877......2256314178023600
.68798.88681187619.1146407046198040.1199143411128185584.325754552781442854792
LINKS
EXAMPLE
Some solutions for n=4 k=4
..0..4..0..2..3....1..2..4..4..0....2..4..3..3..2....3..4..3..1..2
..4..2..0..3..3....2..1..3..4..1....4..2..3..3..1....4..2..2..1..0
..0..0..4..3..1....4..3..2..1..0....3..3..2..2..3....3..2..3..4..2
..2..3..3..2..0....4..4..1..0..0....3..3..2..3..2....1..1..4..2..4
..3..3..1..0..4....0..1..0..0..4....2..1..3..2..2....2..0..2..4..1
CROSSREFS
Row 1 is A182260(n+1)
Sequence in context: A168164 A296933 A270543 * A287348 A019374 A033680
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jun 18 2012
STATUS
approved