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 A231375 #7 Jul 23 2025 06:26:24 %S A231375 2,10,93,2539,209118,54485279,42978519280,103861521149940, %T A231375 768825093368064218,17400837260687664224580, %U A231375 1205024418040758639132121433,255358434130512785761464119154485 %N A231375 Number of n X n 0..1 arrays with no element less than a strict majority of its horizontal and vertical neighbors. %C A231375 Diagonal of A231382 %e A231375 Some solutions for n=3 %e A231375 ..0..0..1....1..0..0....0..0..1....1..0..0....0..0..0....0..0..1....0..1..0 %e A231375 ..0..0..1....0..0..1....0..0..1....1..0..0....1..0..1....0..0..0....0..0..0 %e A231375 ..0..0..0....0..1..1....0..0..1....1..1..0....1..0..0....0..0..0....0..0..1 %K A231375 nonn %O A231375 1,1 %A A231375 _R. H. Hardin_, Nov 08 2013