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 A220577 #6 Jun 19 2025 21:01:19 %S A220577 32,1504,64497,2652007,106841503,4239598056,166807007000, %T A220577 6529331189875,254699982141104,9910761556318406,384907165469846911, %U A220577 14926115051516165111,578101882311226268847,22367892146863380815542 %N A220577 Equals one maps: number of n X 6 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 n X 6 array. %C A220577 Column 6 of A220579. %H A220577 R. H. Hardin, <a href="/A220577/b220577.txt">Table of n, a(n) for n = 1..17</a> %e A220577 Some solutions for n=3 %e A220577 ..0..0..1..0..0..0....0..0..1..0..1..0....0..1..1..0..1..1....1..0..1..0..1..1 %e A220577 ..1..1..0..1..1..1....0..1..1..0..1..0....1..0..1..0..1..0....0..1..0..0..0..0 %e A220577 ..0..1..0..0..0..1....0..1..1..1..0..0....0..1..0..1..0..0....0..0..0..0..1..0 %Y A220577 Cf. A220579. %K A220577 nonn %O A220577 1,1 %A A220577 _R. H. Hardin_, Dec 16 2012