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 A222968 #9 Dec 04 2021 08:33:03 %S A222968 54,534,28836,487830,26342820,677339136,41972251734,1306606331404, %T A222968 82298403509112,3041055175823616,191470088044451700 %N A222968 Number of n X 7 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope. %e A222968 Some solutions for n=3: %e A222968 1 0 0 0 0 1 1 0 0 1 0 0 0 1 1 0 0 0 0 1 1 %e A222968 0 0 0 0 0 0 1 0 0 0 1 1 0 1 1 0 1 1 0 1 1 %e A222968 1 0 0 1 1 1 1 0 0 1 0 0 0 1 1 1 0 1 1 1 1 %Y A222968 Column 6 of A222969. %K A222968 nonn,more %O A222968 1,1 %A A222968 _R. H. Hardin_, Mar 10 2013