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%I #2 Mar 30 2012 17:33:54
%S 1,1,3,1,2,3,6,1,2,5,10,1,3,5,15,1,3,7,21,1,2,4,7,14,28,1,2,3,4,6,9,
%T 12,18,36,1,3,5,9,15,45,1,5,11,55,1,2,3,6,11,22,33,66,1,2,3,6,13,26,
%U 39,78,1,7,13,91,1,3,5,7,15,21,35,105
%N Array read by rows: row n lists divisors of n-th positive triangular number A000217(n).
%e Array begins:
%e 1
%e 1, 3
%e 1, 2, 3, 6
%e 1, 2, 5, 10
%e 1, 3, 5, 15
%e 1, 3, 7, 21
%e 1, 2, 4, 7, 14, 28
%Y Cf. A000217, A133021, A133031, A138882.
%K easy,nonn,tabf
%O 1,3
%A _Omar E. Pol_, Apr 11 2008
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