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A168120 Square array T(n,k) read by antidiagonals in which column k lists each number A000009 followed by k-1 zeros, for k>0.

%I A168120 #3 Mar 30 2012 17:34:03
%S A168120 1,1,1,1,0,1,2,1,0,1,2,0,0,0,1,3,1,1,0,0,1,4,0,0,0,0,0,1,5,2,0,1,0,0,
%T A168120 0,1,6,0,1,0,0,0,0,0,1,8,2,0,0,1,0,0,0,0,1,10,0,0,0,0,0,0,0,0,0,1,12,
%U A168120 3,2,1,0,1,0,0,0,0,0,1,15,0,0,0,0,0,0,0,0,0,0,0,1
%N A168120 Square array T(n,k) read by antidiagonals in which column k lists each number A000009 followed by k-1 zeros, for k>0.
%C A168120 The same structure of the square array in A168019, but using the numbers A000009.
%e A168120 The array begins:
%e A168120 ==================================================
%e A168120 ... Column k: 1. 2. 3. 4. 5. 6. 7. 8. 9 10 11 12
%e A168120 . Row ...........................................
%e A168120 ...n ............................................
%e A168120 ==================================================
%e A168120 .. 0 ........ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
%e A168120 .. 1 ........ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
%e A168120 .. 2 ........ 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
%e A168120 .. 3 ........ 2, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
%e A168120 .. 4 ........ 2, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0,
%e A168120 .. 5 ........ 3, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
%e A168120 .. 6 ........ 4, 2, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0,
%e A168120 .. 7 ........ 5, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,
%e A168120 .. 8 ........ 6, 2, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0,
%e A168120 .. 9 ........ 8, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0,
%e A168120 . 10 ....... 10, 3, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0,
%e A168120 . 11 ....... 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,
%e A168120 . 12 ....... 15, 4, 2, 2, 0, 1, 0, 0, 0, 0, 0, 1,
%e A168120 ...
%Y A168120 Cf. A000009, A000041, A168019, A168021, A168121, A168122.
%K A168120 easy,nonn,tabl
%O A168120 0,7
%A A168120 _Omar E. Pol_, Nov 26 2009
%E A168120 Edited by _Charles R Greathouse IV_, Mar 23 2010