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 A297510 #6 Dec 31 2017 07:34:54 %S A297510 1,280,2534,14201,270845,3624914,35049871,431068698,5534003000, %T A297510 63359116756,744028146659,9066464960896,107792105015031, %U A297510 1274517673890830,15252160661225132,182090112172787219,2165329133215506254 %N A297510 Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 2 neighboring 1s. %C A297510 Row 5 of A297506. %H A297510 R. H. Hardin, <a href="/A297510/b297510.txt">Table of n, a(n) for n = 1..210</a> %H A297510 R. H. Hardin, <a href="/A297510/a297510.txt">Empirical recurrence of order 59</a> %F A297510 Empirical recurrence of order 59 (see link above) %e A297510 Some solutions for n=4 %e A297510 ..0..1..1..0. .1..1..1..0. .0..0..0..0. .0..0..1..0. .1..0..0..0 %e A297510 ..0..0..1..0. .0..0..0..0. .0..1..1..0. .0..1..0..0. .0..1..0..0 %e A297510 ..0..0..0..0. .1..1..0..0. .0..0..0..0. .0..0..1..1. .0..0..1..0 %e A297510 ..0..1..1..0. .0..1..0..1. .0..0..1..0. .0..0..0..0. .0..0..1..0 %e A297510 ..1..0..0..1. .0..0..1..0. .1..1..0..1. .1..1..1..1. .1..1..0..1 %Y A297510 Cf. A297506. %K A297510 nonn %O A297510 1,2 %A A297510 _R. H. Hardin_, Dec 31 2017