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 A140440 #10 Jun 13 2021 05:05:28 %S A140440 0,0,0,0,1,1,2,5,12,40,154,766,4672,34547,302185,3073267,35933851, %T A140440 479768761,7284446498,125435333136 %N A140440 Number of n-node biconnected graphs with girth at least 5. %e A140440 The 5 graphs of order 8 are: %e A140440 0: 4 6; 1: 5 6; 2: 5 7; 3: 6 7; 4: 0 7; 5: 1 2; 6: 0 1 3; 7: 2 3 4; %e A140440 0: 4 5; 1: 4 6; 2: 5 7; 3: 6 7; 4: 0 1; 5: 0 2; 6: 1 3; 7: 2 3; %e A140440 0: 4 5; 1: 4 6; 2: 5 7; 3: 6 7; 4: 0 1 7; 5: 0 2; 6: 1 3; 7: 2 3 4; %e A140440 0: 4 5; 1: 4 7; 2: 5 6; 3: 6 7; 4: 0 1 6; 5: 0 2 7; 6: 2 3 4; 7: 1 3 5; %e A140440 0: 3 6; 1: 4 6; 2: 5 6; 3: 0 7; 4: 1 7; 5: 2 7; 6: 0 1 2; 7: 3 4 5. %Y A140440 Cf. A126757. %K A140440 nonn,more %O A140440 1,7 %A A140440 _Brendan McKay_, Jun 17 2008 %E A140440 a(18)-a(20) from _Brendan McKay_, Jun 13 2021