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 A216614 #5 Jul 22 2025 23:33:33 %S A216614 2,15,67,4140,83437,18171918,732209051,346212390266,22294303538804, %T A216614 18633407258171930,1714659308610029464 %N A216614 Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of a 5Xn array with new integer colors introduced in row major order. %C A216614 Row 5 of A216612 %e A216614 Some solutions for n=4 %e A216614 ..x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1 %e A216614 ..2..x..3..x....2..x..3..x....2..x..3..x....2..x..3..x....2..x..3..x %e A216614 ..x..1..x..2....x..4..x..1....x..0..x..4....x..4..x..2....x..1..x..4 %e A216614 ..0..x..3..x....0..x..5..x....5..x..3..x....3..x..1..x....4..x..0..x %e A216614 ..x..1..x..0....x..3..x..4....x..6..x..4....x..2..x..3....x..3..x..2 %K A216614 nonn %O A216614 1,1 %A A216614 _R. H. Hardin_ Sep 10 2012