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 A378342 #6 Nov 25 2024 20:44:52 %S A378342 1,0,1,2,1,4,6,7,15,22,33,59,94,140,249,388,617,1040,1675,2628,4481, %T A378342 7108,11494,19030,30885,49315,82559,132406,215326,353923,576552, %U A378342 928437,1539504,2485102,4051828,6636368,10830526,17524893,28903185,46838466,76464837,125019717 %N A378342 Number of n edge connected achiral planar maps with an external face in which all internal faces are triangles. %H A378342 Andrew Howroyd, <a href="/A378342/b378342.txt">Table of n, a(n) for n = 3..100</a> %o A378342 (PARI) A378338seq(45) \\ See PARI link in A378340 for program code. %Y A378342 Antidiagonal sums of A378340. %Y A378342 Cf. A378338 (sensed), A378339, A378341, A378343 (unsensed). %K A378342 nonn %O A378342 3,4 %A A378342 _Andrew Howroyd_, Nov 25 2024