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A176919 Triangle by columns: (1, 2, 3, ...) in each column interleaved with (0, 1, 2, ...) zeros. Columns > 1 shifted down twice.

%I A176919 #11 Feb 08 2022 22:43:50
%S A176919 1,2,0,3,1,0,4,0,0,0,5,2,1,0,0,6,0,0,0,0,0,7,3,0,1,0,0,0,8,0,2,0,0,0,
%T A176919 0,0,9,4,0,0,1,0,0,0,0,10,0,0,0,0,0,0,0,0,0,11,5,3,2,0,1,0,0,0,0,0,12,
%U A176919 0,0,0,0,0,0,0,0,0,0,0
%N A176919 Triangle by columns: (1, 2, 3, ...) in each column interleaved with (0, 1, 2, ...) zeros. Columns > 1 shifted down twice.
%C A176919 Row sums of n-th row = A065608(n+1).
%F A176919 Triangle, left border = (1, 2, 3, ...). Each successive column is shifted down twice from previous column and interleaved with k zeros.
%e A176919 First few rows of the triangle:
%e A176919    1;
%e A176919    2, 0;
%e A176919    3, 1, 0;
%e A176919    4, 0, 0, 0;
%e A176919    5, 2, 1, 0, 0;
%e A176919    6, 0, 0, 0, 0, 0;
%e A176919    7, 3, 0, 1, 0, 0, 0;
%e A176919    8, 0, 2, 0, 0, 0, 0, 0;
%e A176919    9, 4, 0, 0, 1, 0, 0, 0, 0;
%e A176919   10, 0, 0, 0, 0, 0, 0, 0, 0, 0;
%e A176919   11, 5, 3, 2, 0, 1, 0, 0, 0, 0, 0;
%e A176919   12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
%e A176919   13, 6, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0;
%e A176919   14, 0, 4, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0;
%e A176919   15, 7, 0, 3, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0;
%e A176919   16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
%e A176919   17, 8, 5, 0, 0, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0;
%e A176919   18, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
%e A176919   19, 9, 0, 4, 3, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0;
%e A176919   ...
%Y A176919 Cf. A065608.
%K A176919 nonn,tabl
%O A176919 1,2
%A A176919 _Gary W. Adamson_ & _Mats Granvik_, Apr 29 2010