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A189218 Triangle read by rows of the index of the least n-gonal number A189216(n,k). 1

%I #4 Mar 30 2012 17:22:58

%S 2,6,2,12,81,2,2,25,143,2,5,6,42,221,2,3,9,8,63,315,2,10,2,14,10,88,

%T 425,2,2,0,56,20,12,117,551,2,0,7,13,0,27,14,150,693,2,5,4,2,11,61,35,

%U 16,187,851,2,3,3,4,28,11,43,44,18,228,1025,2,15,9,0,99,1989,609,117,54,20,273,1215,2

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

%C The n-th term of the n-th row is 2. The first and second columns are A188894 and A188898.

%e The triangle begins:

%e 2

%e 6, 2

%e 12, 81, 2

%e 2, 25, 143, 2

%e 5, 6, 42, 221, 2

%e 3, 9, 8, 63, 315, 2

%e 10, 2, 14, 10, 88, 425, 2

%e 2, 0, 56, 20, 12, 117, 551, 2

%e 0, 7, 13, 0, 27, 14, 150, 693, 2

%K nonn,tabl

%O 3,1

%A _T. D. Noe_, Apr 18 2011

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Last modified April 23 02:14 EDT 2024. Contains 371906 sequences. (Running on oeis4.)