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A140224 Triangle: T(n,m) is number of m's among (d(1),d(2),...,d(n)), where d(n) = A000005(n). 2

%I #9 Mar 11 2014 01:32:25

%S 1,1,1,1,2,0,1,2,1,0,1,3,1,0,0,1,3,1,1,0,0,1,4,1,1,0,0,0,1,4,1,2,0,0,

%T 0,0,1,4,2,2,0,0,0,0,0,1,4,2,3,0,0,0,0,0,0,1,5,2,3,0,0,0,0,0,0,0,1,5,

%U 2,3,0,1,0,0,0,0,0,0,1,6,2,3,0,1,0,0,0,0,0,0,0,1,6,2,4,0,1,0,0,0,0,0,0,0,0

%N Triangle: T(n,m) is number of m's among (d(1),d(2),...,d(n)), where d(n) = A000005(n).

%e The sequence of the numbers of divisors of the first 12 positive integers is: 1,2,2,3,2,4,2,4,3,4,2,6.

%e There is one 1 in this list, five 2's, two 3's, three 4's, zero 5's, one 6 and zero of any other positive integer. So row 12 of the triangle is: 1,5,2,3,0,1,0,0,0,0,0,0.

%Y Cf. A000005, A140223, A140225.

%K nonn,tabl

%O 1,5

%A _Leroy Quet_, May 12 2008

%E Extended by _Ray Chandler_, Jun 26 2009

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