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 A303033 #17 Jun 02 2025 17:24:43
%S A303033 1,1,3,12,81,535,5274,60684,869238,14595645,284939257,6347472749,
%T A303033 159579271688,4482770916274,139578090353236,4783834092385411,
%U A303033 179397242557917048,7322223973235272082,323760818899998259561,15443359560966718348986,791699492870169123493379
%N A303033 Number of unlabeled connected loopless multigraphs with n nodes of degree 5 or less and with single, double or triple edges.
%o A303033 (nauty) for n in {1..11}; do geng -c -D5 ${n} -q | multig -m3 -D5 -u;
%Y A303033 Cf. A134818, A303030, A303031, A303032.
%K A303033 nonn
%O A303033 0,3
%A A303033 _Natan Arie Consigli_, Jun 04 2018
%E A303033 a(12)-a(20) from _Andrew Howroyd_, Mar 20 2020