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 A282935 #4 Mar 03 2017 20:44:39 %S A282935 1,1,2,3,1,3,4,1,2,4,3,5,6,7,1,5,6,1,2,3,6,3,4,7,5,8,9,6,9,10,11,12,1, %T A282935 7,8,1,2,4,8,3,5,9,6,10,12,7,11,13,14,15,1,3,9,4,10,12,13,1,2,5,10,3, %U A282935 6,11,7,12,15,8,13,16,17,18,1,11,12,1,2,3,4,6 %N A282935 Concatenation of the sums of elements of P{d_1}, P{d_2}, P{d_3}, ..., P{d_n}; where P{d_n} denote the power set of the set of divisors of n ordered by the size of the subsets, and in each subset, following the increasing order. %e A282935 Rows with power sets of set of divisors of n (without nonempty sets): %e A282935 {1}; %e A282935 {1}, {2}, {1, 2}; %e A282935 {1}, {3}, {1, 3}; %e A282935 {1}, {2}, {4}, {1, 2}, {1, 4}, {2, 4}, {1, 2, 4}; %e A282935 ... %e A282935 Rows with the sums of elements of these subsets: %e A282935 1; %e A282935 1, 2, 3; %e A282935 1, 3, 4; %e A282935 1, 2, 4, 3, 5, 6, 7; %e A282935 ... %e A282935 Concatenation: 1, 1, 2, 3, 1, 3, 4, 1, 2, 4, 3, 5, 6, 7, ... %Y A282935 Cf. A282903, A282934, A282936. %K A282935 nonn %O A282935 1,3 %A A282935 _Jaroslav Krizek_, Feb 25 2017