A186796 T(n,k)=Half the number of (n+2)X(k+2) binary arrays with each 3X3 subblock having a sum in 2..7

246, 1910, 1910, 14825, 29020, 14825, 115069, 440505, 440505, 115069, 893145, 6687805, 13066921, 6687805, 893145, 6932452, 101532811, 387763760, 387763760, 101532811, 6932452, 53808589, 1541462868, 11506373601, 22495797451

Offset

1,1

Comments

Table starts

.........246...........1910..............14825................115069

........1910..........29020.............440505...............6687805

.......14825.........440505...........13066921.............387763760

......115069........6687805..........387763760...........22495797451

......893145......101532811........11506373601.........1304974153960

.....6932452.....1541462868.......341441530745........75702797880635

....53808589....23402344941.....10131963654512......4391582264258067

...417653681...355292192013....300656729278809....254759386224257430

..3241761282..5394012633636...8921712703662435..14778806361675616311

.25162034228.81891392695720.264743644646633613.857331004466757829463

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

Example

Some solutions for 5X4 with a(1,1)=0
..0..0..0..1....0..0..0..1....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..1..0....1..1..1..1....0..1..1..0....1..1..1..0....0..0..0..1
..1..1..1..1....0..1..1..0....1..1..0..1....1..0..0..1....1..1..0..0
..1..0..0..0....0..0..1..1....1..1..0..0....0..0..0..1....1..1..1..1
..0..1..0..0....0..1..1..1....1..0..0..1....0..1..0..1....0..0..1..1

Crossrefs

Sequence in context: A231965 A067916 A229577 * A186788 A074995 A251524

Adjacent sequences: A186793 A186794 A186795 * A186797 A186798 A186799

Keyword

nonn,tabl

Author

R. H. Hardin Feb 26 2011

Status

approved