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 A201383 #7 Jul 22 2025 16:13:01 %S A201383 2,16,467,5694,295813,3826202,175765510,1819250859,65629320845, %T A201383 534428405524,15483460261810,102996778664996,2488946990439369, %U A201383 14017118437802211,291386682009006888,1427682924988875276 %N A201383 Number of nX7 0..1 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other. %C A201383 Column 7 of A201384 %H A201383 R. H. Hardin, <a href="/A201383/b201383.txt">Table of n, a(n) for n = 1..53</a> %e A201383 Some solutions for n=4 %e A201383 ..0..0..0..0..0..1..1....0..0..0..0..0..0..1....0..0..0..0..1..1..1 %e A201383 ..0..0..1..1..1..0..1....0..1..1..1..1..1..0....0..0..1..1..0..1..1 %e A201383 ..1..1..0..0..1..1..0....0..1..1..1..1..1..0....0..1..1..1..0..1..1 %e A201383 ..1..1..0..1..0..1..0....1..0..0..0..1..1..0....1..0..0..0..0..0..1 %K A201383 nonn %O A201383 1,1 %A A201383 _R. H. Hardin_ Nov 30 2011