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 A220487 #10 Mar 05 2013 21:00:50 %S A220487 1,3,4,7,8,9,11,15,17,18,19,20,23,28,30,31,32,33,34,35,37,41,43,46,52, %T A220487 55,57,59,60,61,62,63,64,65,66,69,74,76,80,87,90,92,94,95,96,97,98,99, %U A220487 100,101,102,103,104,105,107,111,113,116,122,125,127,129,134,138 %N A220487 Partial sums of triangle A206437. %F A220487 a(A182181(n)) = A182244(n), n >= 1. %F A220487 a(A006128(n)) = A066186(n), n >= 1. %e A220487 When written as an irregular triangle in which row j has length A194446(j) then the right border gives A182244. Also the records of row lengths give the partition numbers (A000041) of the positive integers as shown below: %e A220487 1; %e A220487 3, 4; %e A220487 7, 8, 9; %e A220487 11; %e A220487 15,17,18,19,20; %e A220487 23; %e A220487 28,30,31,32,33,34,35; %e A220487 37; %e A220487 41,43; %e A220487 46; %e A220487 52,55,57,59,60,61,62,63,64,65,66; %e A220487 69; %e A220487 74,76; %e A220487 80; %e A220487 87,90,92,94,95,96,97,98,99,100,101,102,103,104,105; %e A220487 ... %e A220487 Also when written as an irregular triangle in which row j has length A138137(j) then the right border gives A066186 as shown below: %e A220487 1; %e A220487 3, 4; %e A220487 7, 8, 9; %e A220487 11,15,17,18,19,20; %e A220487 23,28,30,31,32,33,34,35; %e A220487 37,41,43,46,52,55,57,59,60,61,62,63,64,65,66; %e A220487 69,74,76,80,87,90,92,94,95,96,97,98,99,100,101,102,103,104,105; %e A220487 ... %Y A220487 Cf. A000041, A006128, A066186, A135010, A138137, A138879, A141285, A182181, A182244, A186412, A194446, A206437. %K A220487 nonn,tabf %O A220487 1,2 %A A220487 _Omar E. Pol_, Jan 18 2013