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A188311 T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2X2 subblock sums 9
0, 24, 24, 36, 128, 36, 160, 664, 664, 160, 380, 3036, 3784, 3036, 380, 1332, 14832, 30096, 30096, 14832, 1332, 3616, 71888, 203584, 321696, 203584, 71888, 3616, 11828, 348728, 1514522, 3415196, 3415196, 1514522, 348728, 11828, 33764, 1694376 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Table starts
......0.......24.........36.........160..........380.........1332.........3616
.....24......128........664........3036........14832........71888.......348728
.....36......664.......3784.......30096.......203584......1514522.....10660334
....160.....3036......30096......321696......3415196.....37040856....396560236
....380....14832.....203584.....3415196.....53468700....878907878..14070003616
...1332....71888....1514522....37040856....878907878..21615769428.520845610752
...3616...348728...10660334...396560236..14070003616.520845610752
..11828..1694376...77627954..4280848766.228625683370
..33764..8227500..553295656.45974525280
.107240.39976476.3999339740
LINKS
EXAMPLE
Some solutions for 4X3
..1..1..0....1..0..1....1..0..1....0..1..0....0..1..1....1..1..1....1..1..1
..1..0..1....0..0..0....1..0..0....0..0..0....1..0..0....0..1..0....0..1..1
..1..1..0....1..1..1....1..0..1....1..0..1....1..0..0....0..1..0....1..1..1
..1..0..1....1..0..1....1..1..1....1..1..1....1..0..0....0..0..0....0..1..0
CROSSREFS
Column 1 is A185489
Sequence in context: A235249 A115028 A099543 * A185497 A186939 A185750
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 27 2011
STATUS
approved

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Last modified April 18 13:29 EDT 2024. Contains 371780 sequences. (Running on oeis4.)