A065231 - cp's OEIS frontend

A065231 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the heptagonal numbers (A000566). The first elements of the rows form a(n).

%I A065231 #6 Nov 01 2024 15:05:11
%S A065231 1,1,3,6,3,8,14,3,11,20,30,7,19,32,46,6,22,39,57,76,15,36,58,81,105,
%T A065231 18,44,71,99,128,10,41,73,106,140,175,22,59,97,136,176,217,24,67,111,
%U A065231 156,202,249,11,60,110,161,213,266,320,33,89,146,204,263,323,384,43,106
%N A065231 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the heptagonal numbers (A000566). The first elements of the rows form a(n).
%Y A065231 Mini-index to these sequences: A064766, A064865, A064866, A065221-A655234 are all of the same type. See A064766 for a detailed explanation.
%K A065231 easy,nonn
%O A065231 0,3
%A A065231 _Floor van Lamoen_, Oct 22 2001

cp's OEIS Frontend

A065231 Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the heptagonal numbers (A000566). The first elements of the rows form a(n).