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A130124 Triangle defined by A130123 * A002260, read by rows.

%I A130124 #9 Sep 08 2022 08:45:30
%S A130124 1,2,4,4,8,12,8,16,24,32,16,32,48,64,80,32,64,96,128,160,192,64,128,
%T A130124 192,256,320,384,448,128,256,384,512,640,768,896,1024,256,512,768,
%U A130124 1024,1280,1536,1792,2048,2304,512,1024,1536,2048,2560,3072,3584,4096,4608,5120
%N A130124 Triangle defined by A130123 * A002260, read by rows.
%C A130124 Row sums = A001780, (1, 6, 24, 80, 240, ...).
%H A130124 G. C. Greubel, <a href="/A130124/b130124.txt">Rows n = 1..100 of triangle, flattened</a>
%F A130124 A130123 * A002260, where A130123 = the 2^n transform and A002260 = [1; 1, 2; 1, 2, 3; ...).
%F A130124 T(n, k) = 2^(n-1)*k. - _G. C. Greubel_, Jun 05 2019
%e A130124 First few rows of the triangle are:
%e A130124    1;
%e A130124    2,  4;
%e A130124    4,  8, 12;
%e A130124    8, 16, 24,  32;
%e A130124   16, 32, 48,  64,  80;
%e A130124   32, 64, 96, 128, 160, 192; ...
%t A130124 Table[2^(n-1)*k, {n,1,12}, {k,1,n}]//Flatten (* _G. C. Greubel_, Jun 05 2019 *)
%o A130124 (PARI) {T(n,k) = 2^(n-1)*k}; \\ _G. C. Greubel_, Jun 05 2019
%o A130124 (Magma) [[2^(n-1)*k: k in [1..n]]: n in [1..12]]; // _G. C. Greubel_, Jun 05 2019
%o A130124 (Sage) [[2^(n-1)*k for k in (1..n)] for n in (1..12)] # _G. C. Greubel_, Jun 05 2019
%o A130124 (GAP) Flat(List([1..12], n-> List([1..n], k-> 2^(n-1)*k ))); # _G. C. Greubel_, Jun 05 2019
%Y A130124 Cf. A001780, A130123, A002260.
%K A130124 nonn,tabl
%O A130124 1,2
%A A130124 _Gary W. Adamson_, May 11 2007
%E A130124 More terms added by _G. C. Greubel_, Jun 05 2019