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 A277134 #10 Nov 11 2016 19:56:45 %S A277134 1,2,14,496,64902,33480816,68683762160,562879053495808, %T A277134 18446172258948389894,2417833047807055774900336, %U A277134 1267648177654223684013845739628,2658454721440933587372867150275542528 %N A277134 Number of "unbordered" n X n binary arrays. %C A277134 An n X n array is bordered if there exists some i,j, with 1 <= i, j < n, such that the first i rows are the same as the last i rows, and the first j columns are the same as the last j columns. Otherwise it is unbordered. %e A277134 For n = 2 the only bordered arrays are the arrays of all 0's and all 1's. %Y A277134 This is one possible 2-dimensional analog of A003000. %K A277134 nonn %O A277134 0,2 %A A277134 _Jeffrey Shallit_, Oct 01 2016