cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A279168 T(n,k)=Number of nXk 0..1 arrays with no element equal to a strict majority of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Original entry on oeis.org

0, 1, 1, 0, 0, 0, 3, 0, 0, 3, 3, 8, 16, 8, 3, 9, 24, 117, 117, 24, 9, 15, 88, 483, 864, 483, 88, 15, 31, 284, 2001, 5628, 5628, 2001, 284, 31, 57, 772, 7709, 34764, 57248, 34764, 7709, 772, 57, 108, 2000, 28139, 203226, 557163, 557163, 203226, 28139, 2000, 108, 199
Offset: 1

Views

Author

R. H. Hardin, Dec 07 2016

Keywords

Comments

Table starts
...0....1......0........3..........3............9.............15
...1....0......0........8.........24...........88............284
...0....0.....16......117........483.........2001...........7709
...3....8....117......864.......5628........34764.........203226
...3...24....483.....5628......57248.......557163........5159514
...9...88...2001....34764.....557163......8426362......121098448
..15..284...7709...203226....5159514....121098448.....2708250146
..31..772..28139..1143396...45915548...1686053298....58954576326
..57.2000..99519..6219491..396958758..22825771952..1248383818884
.108.5008.343156.33013384.3354431037.302051174586.25842455526113

Examples

			Some solutions for n=4 k=4
..0..1..1..1. .0..0..1..0. .0..1..0..1. .0..1..0..1. .0..1..0..1
..1..0..0..0. .1..1..0..1. .0..1..0..0. .1..0..0..1. .0..1..1..1
..0..0..1..0. .0..0..1..1. .0..1..1..0. .1..0..1..1. .0..1..0..0
..1..0..1..1. .1..0..1..0. .1..0..1..0. .1..0..0..0. .1..0..1..1
		

Crossrefs

Column 1 is A105423(n-2).

Formula

Empirical for column k:
k=1: a(n) = 3*a(n-1) -5*a(n-3) +3*a(n-5) +a(n-6)
k=2: [order 11]
k=3: [order 33] for n>36
k=4: [order 84] for n>88