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%I A377460 #20 Nov 17 2024 07:29:10
%S A377460 11,31,49,62,73,82,83,85,92,119,125,139,145,151,157,167,173,179,199,
%T A377460 221,223,238,245,247,250,251,255,257,262,263,265,278,284,295,328,332,
%U A377460 359,389,406,413,433,445,461,467,471,487,491,494,509,515,523,530,533,539,551,556,557,590
%N A377460 Numbers that cannot be generated from the box stacking described below.
%C A377460 Boxes on the bottom row are labeled 1.
%C A377460 Boxes not on the bottom row must be supported directly below, and are labeled as the sum of the 2 or 3 boxes they are directly above, including diagonally.
%C A377460 Powers of 2 and powers of 3 are not in this list.
%e A377460 The first 9 numbers can be generated like this:
%e A377460 1  2    3   4   5     6     7    8      9
%e A377460    11  111  22  23    33   232  233    333
%e A377460             11  111  1111  111  1111  11111
%Y A377460 Cf. A000079, A000244.
%K A377460 nonn
%O A377460 1,1
%A A377460 _Erich Friedman_, Oct 29 2024
%E A377460 a(38)-a(54) from _Alois P. Heinz_, Oct 30 2024

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