login
A278610
T(n,k)=Number of nXk 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.
7
0, 0, 0, 0, 0, 0, 1, 395, 395, 1, 56, 16224, 53360, 16224, 56, 728, 354696, 5985658, 5985658, 354696, 728, 5328, 6208804, 442089480, 1608427228, 442089480, 6208804, 5328, 27876, 94510277, 23974522382, 371601597959, 371601597959, 23974522382
OFFSET
1,8
COMMENTS
Table starts
.....0..........0..............0...................1......................56
.....0..........0............395...............16224..................354696
.....0........395..........53360.............5985658...............442089480
.....1......16224........5985658..........1608427228............371601597959
....56.....354696......442089480........371601597959.........267157122056196
...728....6208804....23974522382......70116431548595......170796560376996116
..5328...94510277..1079873605870...10962535851392548....95557122165321489360
.27876.1235465691.43032494710944.1484609498751465944.46856747385448318164254
LINKS
FORMULA
Empirical for column k:
k=1: [polynomial of degree 15]
k=2: [polynomial of degree 63]
EXAMPLE
Some solutions for n=3 k=4
..0..3..3..1. .0..3..2..3. .0..3..2..0. .0..1..1..0. .0..3..0..3
..0..1..0..0. .0..2..2..1. .0..1..3..3. .0..1..0..1. .0..2..2..2
..1..2..0..1. .0..0..3..0. .1..1..0..1. .0..3..3..0. .0..0..0..2
CROSSREFS
Sequence in context: A270843 A267965 A268030 * A278605 A278269 A278606
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Nov 23 2016
STATUS
approved