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 A333276 #24 Jan 01 2024 22:47:20 %S A333276 12,50,152,346,732,1294,2232,3546,5428,7806,11136,15226,20676,27150, %T A333276 35048,44386,56044,69302,85480,103882,125180,148942,176968,208034, %U A333276 243772,283014,327272,375826,431212,490918,558456,631978,712844,799726,895152,997322,1110628 %N A333276 a(n) = Sum_k k*A333274(n,k). %C A333276 a(n)/A331755(n) is the average number of polygons touching a vertex in the graph defined in A306302. %H A333276 Lars Blomberg, <a href="/A333276/b333276.txt">Table of n, a(n) for n = 1..100</a> %H A333276 Scott R. Shannon, <a href="/A333276/a333276.png">Images of vertices for n=1</a>. %H A333276 Scott R. Shannon, <a href="/A333276/a333276_1.png">Images of vertices for n=2</a>. %H A333276 Scott R. Shannon, <a href="/A333276/a333276_2.png">Images of vertices for n=3</a>. %H A333276 Scott R. Shannon, <a href="/A333276/a333276_3.png">Images of vertices for n=4</a>. %H A333276 Scott R. Shannon, <a href="/A333276/a333276_4.png">Images of vertices for n=9</a>. %H A333276 Scott R. Shannon, <a href="/A333276/a333276_5.png">Images of vertices for n=14</a>. %Y A333276 Cf. A159065, A306302, A333274, A333275, A333277. %K A333276 nonn %O A333276 1,1 %A A333276 _Scott R. Shannon_ and _N. J. A. Sloane_, Mar 15 2020 %E A333276 a(15) and beyond from _Lars Blomberg_, Jun 17 2020