A065230 - cp's OEIS frontend

A065230 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 hexagonal numbers. The first elements of the rows form a(n).

%I A065230 #7 Nov 01 2024 15:06:57
%S A065230 1,1,3,6,4,9,15,7,15,24,6,17,29,42,11,26,42,59,11,30,50,71,2,25,49,74,
%T A065230 100,7,35,64,94,125,4,37,71,106,142,179,27,66,106,147,189,1,45,90,136,
%U A065230 183,231,4,54,105,157,210,264,319,50,107,165,224,284,345,29,92,156,221
%N A065230 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 hexagonal numbers. The first elements of the rows form a(n).
%Y A065230 Mini-index to these sequences: A064766, A064865, A064866, A065221-A655234 are all of the same type. See A064766 for a detailed explanation.
%K A065230 easy,nonn
%O A065230 0,3
%A A065230 _Floor van Lamoen_, Oct 22 2001

cp's OEIS Frontend

A065230 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 hexagonal numbers. The first elements of the rows form a(n).