A278729 Number of nX3 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.

40, 1947, 58904, 1410818, 28637916, 506031118, 7907770636, 110655824716, 1401584381570, 16222274394016, 173007912264684, 1712497545142699, 15831976807688826, 137451501603516285, 1125976516897709842

Offset: 1

Author

R. H. Hardin, Nov 27 2016

Keywords

• nonn

Comments

Column 3 of A278734.

Examples

			Some solutions for n=3
..2..2..1. .0..0..0. .1..0..0. .0..3..1. .3..1..1. .3..1..0. .2..0..0
..1..1..3. .1..2..1. .0..3..1. .0..3..1. .3..3..1. .0..0..0. .3..1..1
..2..2..2. .2..2..1. .1..1..3. .1..0..1. .2..0..0. .1..3..2. .1..2..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical polynomial of degree 109

Crossrefs

Cf. A278734.

Formula

Empirical polynomial of degree 109 (see link above)