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 A378337 #5 Nov 25 2024 20:45:33 %S A378337 1,2,6,32,155,1043,7083,51983,393064,3069809,24522342,199837021, %T A378337 1655355627,13907476161,118275808160,1016657106858,8821284816805, %U A378337 77181267608093,680346219098844,6037537131435871,53904120217352519,483921982054548241,4366269495618350828,39577142154691122910 %N A378337 Number of connected sensed planar maps with an external face and n internal triangular faces. %o A378337 (PARI) A378337seq(20) \\ See PARI link in A378340 for program code. %Y A378337 Column sums of A378336. %Y A378337 Cf. A378335, A378338, A378341. %K A378337 nonn %O A378337 1,2 %A A378337 _Andrew Howroyd_, Nov 23 2024