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A194615
T(n,k)=Half the number of lower triangles of an (n+1)X(n+1) 0..k array with no element equal to the average of its horizontal and vertical neighbors
12
1, 5, 5, 16, 96, 47, 36, 775, 4322, 849, 69, 3638, 132214, 571364, 29241, 117, 12438, 1674043, 86867366, 205801866, 1901849, 184, 34247, 12561823, 3703163910, 214726600125, 202803700252, 234932757, 272, 82057, 66369488, 73569838704
OFFSET
1,2
COMMENTS
Table starts
.................1.......................5........................16
.................5......................96.......................775
................47....................4322....................132214
...............849..................571364..................86867366
.............29241...............205801866..............214726600125
...........1901849............202803700252..........1988649454264015
.........234932757.........547917448108462......69098146174647014753
.......55047807551.....4059864930297777162.9010212831798851496619501
....24470603864937.82468548660331834255159
.20637055514911557
LINKS
EXAMPLE
Some solutions for 4X4
..2........0........0........2........2........0........0........0
..0.0......1.1......2.0......1.1......0.0......2.0......1.0......1.2
..0.1.0....0.0.2....1.2.2....2.0.0....1.1.1....2.2.0....0.0.1....2.1.1
..2.2.1.0..2.2.2.0..2.1.0.2..1.2.2.1..1.0.2.1..1.2.2.0..1.0.1.0..1.1.0.2
CROSSREFS
Column 1 is A140422(n+1)
Row 1 is A055232(n+1)
Sequence in context: A370236 A356049 A154232 * A195465 A173464 A072272
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Aug 30 2011
STATUS
approved