# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a180995 Showing 1-1 of 1 %I A180995 #3 Mar 31 2012 12:35:49 %S A180995 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3,3,0,0,0,0,6,28,6,0,0,0,0,6,187, %T A180995 187,6,0,0,0,0,4,780,2474,780,4,0,0,0,0,1,1912,23621,23621,1912,1,0,0, %U A180995 0,0,0,3108,171671,470008,171671,3108,0,0,0,0,0,0,3853,885923,7492039,7492039 %N A180995 T(n,k)=number of nXk binary matrices with rows and columns each in strictly increasing order as binary numbers and all numbers unique %C A180995 Table starts %C A180995 .0.0.0....0........0.........0..........0..........0.........0..........0 %C A180995 .0.0.0....0........0.........0..........0..........0.........0..........0 %C A180995 .0.0.0....3........6.........6..........4..........1.........0..........0 %C A180995 .0.0.3...28......187.......780.......1912.......3108......3853.......3731 %C A180995 .0.0.6..187.....2474.....23621.....171671.....885923...3365708...10119429 %C A180995 .0.0.6..780....23621....470008....7492039...92532010.897123586.6972178362 %C A180995 .0.0.4.1912...171671...7492039..233399774.6228138303..................... %C A180995 .0.0.1.3108...885923..92532010.6228138303................................ %C A180995 .0.0.0.3853..3365708.897123586........................................... %C A180995 .0.0.0.3731.10119429..................................................... %H A180995 R. H. Hardin, Table of n, a(n) for n=1..111 %e A180995 All solutions for 3X4 %e A180995 ..0..0..1..1....0..0..1..1....0..1..1..1 %e A180995 ..0..1..0..1....0..1..0..1....1..0..0..1 %e A180995 ..1..0..0..0....1..0..0..1....1..0..1..0 %K A180995 nonn,tabl %O A180995 1,18 %A A180995 _R. H. Hardin_ Sep 30 2010 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE