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 A266427 #3 Dec 29 2015 09:53:29 %S A266427 8,92,1170,16585,251381,3889553,59155748,861030491,11809616668, %T A266427 151566391972,1816912772913,20365495779036 %N A266427 Number of nX7 binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing. %C A266427 Column 7 of A266428. %e A266427 Some solutions for n=4 %e A266427 ..0..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..0..0..0 %e A266427 ..0..0..0..0..0..1..1....0..0..1..1..1..1..1....0..0..0..0..0..1..1 %e A266427 ..0..1..1..1..1..0..1....0..1..0..0..0..1..1....0..0..0..0..0..1..1 %e A266427 ..1..0..0..1..1..1..1....1..1..1..1..1..0..0....0..0..0..0..1..0..0 %Y A266427 Cf. A266428. %K A266427 nonn %O A266427 1,1 %A A266427 _R. H. Hardin_, Dec 29 2015