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 A134065 #9 Jun 07 2023 08:49:42 %S A134065 1,3,4,3,8,4,3,12,12,4,3,16,24,16,4,3,20,40,40,20,4,3,24,60,80,60,24, %T A134065 4,3,28,84,140,140,84,28,4,3,32,112,224,280,224,112,32,4,3,36,144,336, %U A134065 504,504,336,144,36,4,3,40,180,480,840,1008,840,480,180,40,4,3,44,220,660,1320,1848,1848,1320,660,220,44,4 %N A134065 Triangle read by rows: A134059 + A124927 - A007318 as infinite lower triangular matrices. %C A134065 Row sums = A078485 starting (1, 7, 15, 31, 63, 127, ...). %e A134065 First few rows of the triangle: %e A134065 1; %e A134065 3, 4; %e A134065 3, 8, 4; %e A134065 3, 12, 12, 4; %e A134065 3, 16, 24, 16, 4; %e A134065 3, 20, 40, 40, 20, 4; %e A134065 ... %Y A134065 Cf. A078485, A124927, A134059. %K A134065 nonn,tabl %O A134065 0,2 %A A134065 _Gary W. Adamson_, Oct 05 2007 %E A134065 a(15) = 3 inserted and more terms from _Georg Fischer_, Jun 07 2023