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%I #3 Mar 30 2012 17:34:03
%S 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 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 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 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 The same structure of the square array in A168019, but using the numbers A000009.
%e The array begins:
%e ==================================================
%e ... Column k: 1. 2. 3. 4. 5. 6. 7. 8. 9 10 11 12
%e . Row ...........................................
%e ...n ............................................
%e ==================================================
%e .. 0 ........ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
%e .. 1 ........ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
%e .. 2 ........ 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
%e .. 3 ........ 2, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
%e .. 4 ........ 2, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0,
%e .. 5 ........ 3, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
%e .. 6 ........ 4, 2, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0,
%e .. 7 ........ 5, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,
%e .. 8 ........ 6, 2, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0,
%e .. 9 ........ 8, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0,
%e . 10 ....... 10, 3, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0,
%e . 11 ....... 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,
%e . 12 ....... 15, 4, 2, 2, 0, 1, 0, 0, 0, 0, 0, 1,
%e ...
%Y Cf. A000009, A000041, A168019, A168021, A168121, A168122.
%K easy,nonn,tabl
%O 0,7
%A _Omar E. Pol_, Nov 26 2009
%E Edited by _Charles R Greathouse IV_, Mar 23 2010
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