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%I #6 Feb 24 2017 17:56:56
%S 1,1,1,2,1,1,1,2,2,2,3,1,1,1,1,2,2,2,2,2,2,3,3,3,3,4,1,1,1,1,1,2,2,2,
%T 2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,5,1,1,1,1,1,1,2,2,2,2,2,
%U 2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3
%N Concatenation of the numbers of elements of P{1}, P{1, 2}, P{1, 2, 3}, ..., P{1, 2, 3, ..., n}; where P{A} denote the power set of set A ordered by the size of the subsets, and in each subset, following the increasing order.
%e Rows with power sets of set of numbers from 1 to n (without nonempty sets):
%e {1};
%e {1}, {2}, {1, 2};
%e {1}, {2}, {3}, {1, 2}, {1, 3}, {2, 3}, {1, 2, 3};
%e ...
%e Rows with the number of elements of these subsets:
%e 1;
%e 1, 1, 2;
%e 1, 1, 1, 2, 2, 2, 3;
%e ...
%e Concatenation: 1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 3, ...
%Y Cf. A193360, A282905, A221914.
%K nonn
%O 1,4
%A _Jaroslav Krizek_, Feb 24 2017
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