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A143038 Triangle read by rows, A000012 * A134309 * A000012, where A134309 = an infinite lower triangular matrix with (1, 1, 2, 4, 8, 16, ...) in the main diagonal and the rest zeros.

%I A143038 #15 Feb 08 2022 22:01:28
%S A143038 1,1,2,2,3,4,4,6,7,8,8,12,14,15,16,16,24,28,30,31,32,32,48,56,60,62,
%T A143038 63,64,64,96,112,120,124,126,127,128,128,192,224,240,248,252,254,255,
%U A143038 256,256,384,448,480,496,504,508,510,511,512
%N A143038 Triangle read by rows, A000012 * A134309 * A000012, where A134309 = an infinite lower triangular matrix with (1, 1, 2, 4, 8, 16, ...) in the main diagonal and the rest zeros.
%C A143038 Row sums = A002064, the Cullen numbers (1, 3, 9, 25, 65, 161, 385, ...).
%F A143038 a(n) = 2^i - 2^(i-1-j)*[j<i], where i = A003056(n), j = A002262(n). - _Yuchun Ji_, May 15 2020
%e A143038 First few rows of the triangle:
%e A143038    1;
%e A143038    1,  2;
%e A143038    2,  3,  4;
%e A143038    4,  6 , 7,  8;
%e A143038    8, 12, 14, 15, 16;
%e A143038   16, 24, 28, 30, 21, 32;
%e A143038   32, 48, 56, 60, 62, 63, 64;
%e A143038   ...
%Y A143038 Cf. A134309, A002064.
%Y A143038 Cf. A002262, A003056, A023532.
%K A143038 nonn,tabl
%O A143038 0,3
%A A143038 _Gary W. Adamson_, Jul 18 2008