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 A266938 #4 Jan 06 2016 11:34:07 %S A266938 6,19,44,100,210,429,816,1534,2727,4753,7931,13044,20676,32360,49327, %T A266938 73959,108612,157751,224746,317514,440564,606496,823905,1110469, %U A266938 1480403,1957027,2563177,3335398,4302564,5520403,7021711,8888187,11173884 %N A266938 Number of 5Xn binary arrays with rows lexicographically nondecreasing and columns lexicographically nondecreasing and row sums nondecreasing and column sums nonincreasing. %C A266938 Row 5 of A266935. %H A266938 R. H. Hardin, <a href="/A266938/b266938.txt">Table of n, a(n) for n = 1..57</a> %e A266938 Some solutions for n=4 %e A266938 ..0..1..1..1....0..0..0..0....0..0..0..1....0..0..0..0....0..0..0..0 %e A266938 ..1..0..1..1....0..0..0..0....1..1..1..0....0..0..1..1....0..0..0..0 %e A266938 ..1..1..0..1....0..0..0..0....1..1..1..0....1..1..0..0....0..0..1..1 %e A266938 ..1..1..1..0....0..0..0..1....1..1..1..0....1..1..0..1....1..1..0..1 %e A266938 ..1..1..1..1....1..1..1..0....1..1..1..1....1..1..1..0....1..1..1..0 %Y A266938 Cf. A266935. %K A266938 nonn %O A266938 1,1 %A A266938 _R. H. Hardin_, Jan 06 2016