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 A355952 #4 Aug 13 2022 15:46:14 %S A355952 1,1,1,1,1,1,5,5,35,35,35,7,55,11,5005,5005,5005,5005,85085,85085, %T A355952 323323,323323,46189,46189,437437,572033,185910725,185910725,26558675, %U A355952 185910725,5391411025,5391411025,1453336885,43332575,4775249765,15193976525,6685349671,283758475 %N A355952 Column 0 of the irregular triangle A355588. %C A355952 a(n) are the denominators v in the representation R = s/t - (2*sqrt(3)/Pi)*u/v of the resistance between two nodes with distance n on the same grid line in an infinite triangular lattice of one-ohm resistors. The corresponding denominators are A355951. See there for more information, e.g., how to determine s/t. %o A355952 (PARI) See A355951. %Y A355952 Cf. A355585, A355588, A355951 (numerators). %K A355952 nonn,frac %O A355952 0,7 %A A355952 _Hugo Pfoertner_, Jul 21 2022