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.
%I A266545 #3 Dec 31 2015 07:06:16 %S A266545 2,5,11,27,58,176,366,1062,2571,7345,17540,47970,109375,272134,595031, %T A266545 1359839,2827311,6072251,12027150,24388681,46416427,89575530, %U A266545 164016985,303788687,537614351,959313275,1647205384 %N A266545 Number of nX6 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nonincreasing. %C A266545 Column 6 of A266547. %e A266545 Some solutions for n=6 %e A266545 ..0..0..0..1..1..1....0..0..0..1..1..1....0..0..0..1..1..1....0..0..0..1..1..1 %e A266545 ..0..1..1..0..0..0....0..1..1..0..0..1....0..0..1..0..1..1....0..0..1..0..1..1 %e A266545 ..1..0..0..0..0..0....1..0..0..1..1..0....0..1..1..0..0..0....0..1..1..0..0..1 %e A266545 ..1..0..0..0..0..0....1..1..1..0..0..0....1..0..0..1..0..0....1..0..1..0..1..0 %e A266545 ..1..0..0..0..0..0....1..1..1..0..0..0....1..1..0..0..0..0....1..1..0..1..0..0 %e A266545 ..1..0..0..0..0..0....1..1..1..0..0..0....1..1..0..0..0..0....1..1..0..1..0..0 %Y A266545 Cf. A266547. %K A266545 nonn %O A266545 1,1 %A A266545 _R. H. Hardin_, Dec 31 2015