A202648 -id:A202648 - cp's OEIS frontend

A203610 T(n,k)=Number of nXk 0,1 arrays with adjacent row and column sums unequal.

2, 2, 2, 2, 8, 2, 2, 20, 20, 2, 2, 44, 126, 44, 2, 2, 116, 728, 728, 116, 2, 2, 332, 4374, 10016, 4374, 332, 2, 2, 900, 25788, 129656, 129656, 25788, 900, 2, 2, 2268, 149794, 1649668, 3648810, 1649668, 149794, 2268, 2, 2, 5716, 866692, 20742920, 98676048

Offset: 1

R. H. Hardin Jan 03 2012

Table starts
.2.....2........2...........2..............2...............2................2
.2.....8.......20..........44............116.............332..............900
.2....20......126.........728...........4374...........25788...........149794
.2....44......728.......10016.........129656.........1649668.........20742920
.2...116.....4374......129656........3648810........98676048.......2608783126
.2...332....25788.....1649668.......98676048......5616280768.....310153746516
.2...900...149794....20742920.....2608783126....310153746516...35610018145138
.2..2268...866692...256903112....67877862300..16801526882832.3993667091848452
.2..5716..4989242..3151779352..1746486947416.897690327775816
.2.14892.28600208.38451720324.44565435574244

			Some solutions for 4X4
..0..0..0..1....1..0..0..0....1..1..1..0....0..1..1..0....0..0..1..1
..0..0..1..1....0..1..1..0....1..0..1..0....1..1..0..1....0..0..0..1
..0..1..0..0....1..0..1..1....0..0..0..1....1..0..0..0....0..0..0..0
..0..1..0..1....1..1..1..1....1..0..1..0....1..0..0..1....1..0..0..0

R. H. Hardin, Table of n, a(n) for n = 1..111

Diagonal is A202648

cp's OEIS Frontend

A203610 T(n,k)=Number of nXk 0,1 arrays with adjacent row and column sums unequal.

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