cp's OEIS Frontend

A189217 Triangle read by rows of the index of the least k-gonal number A189216(n,k).

%I A189217 #4 Mar 30 2012 17:22:58
%S A189217 2,8,2,20,99,2,3,35,165,2,10,9,54,247,2,6,15,11,77,345,2,25,3,21,13,
%T A189217 104,459,2,4,0,91,28,15,135,589,2,0,14,22,0,36,17,170,735,2,14,8,3,17,
%U A189217 86,45,19,209,897,2,8,6,7,46,16,58,55,21,252,1075,2,50,21,0,171,3081,861,153,66,23,299,1269,2
%N A189217 Triangle read by rows of the index of the least k-gonal number A189216(n,k).
%C A189217 The n-th term of the n-th row is 2. The first and second columns are A188893 and A188897.
%e A189217 The triangle begins:
%e A189217 2,
%e A189217 8,   2
%e A189217 20,  99,  2
%e A189217 3,   35,  165,  2
%e A189217 10,  9,   54,   247,  2
%e A189217 6,   15,  11,   77,   345,  2
%e A189217 25,  3,   21,   13,   104,  459,   2
%e A189217 4,   0,   91,   28,   15,   135,   589,   2
%e A189217 0,   14,  22,   0,    36,   17,    170,   735,   2
%K A189217 nonn,tabl
%O A189217 3,1
%A A189217 _T. D. Noe_, Apr 18 2011