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 A255045 #21 Feb 17 2015 00:13:19 %S A255045 1,1,2,1,2,3,4,1,2,3,4,3,6,9,8,1,2,3,4,3,6,9,8,3,6,9,10,11,20,25,16,1, %T A255045 2,3,4,3,6,9,8,3,6,9,10,11,20,25,16,3,6,9,10,11,20,25,18,11,20,27,30, %U A255045 41,64,65,32,1,2,3,4,3,6,9,8,3,6,9,10,11,20,25,16,3,6,9,10,11,20,25,18,11,20,27,30,41,64,65,32,3,6,9,10,11,20,25,18 %N A255045 a(n) = (1 + A160552(n))/2. %C A255045 Triangle of numbers related to cellular automata. %C A255045 It appears that this is also a triangle read by rows in which row n lists the first 2^(n-1) terms of A255046, with n >= 1. %H A255045 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %e A255045 Written as an irregular triangle in which the length of row j is 2^j, j >= 0, the sequence begins: %e A255045 1; %e A255045 1,2; %e A255045 1,2,3,4; %e A255045 1,2,3,4,3,6,9,8; %e A255045 1,2,3,4,3,6,9,8,3,6,9,10,11,20,25,16; %e A255045 1,2,3,4,3,6,9,8,3,6,9,10,11,20,25,16,3,6,9,10,11,20,25,18,11,20,27,30,41,64,65,32; %e A255045 ... %e A255045 It appears that the right border gives A000079. %e A255045 It appears that the row sums give A007582. %e A255045 It appears that rows converge to A255046. %Y A255045 Cf. A000079, A007582, A139251, A151548, A160552, A169708, A255046, A255049. %K A255045 nonn,tabf %O A255045 1,3 %A A255045 _Omar E. Pol_, Feb 13 2015