A131033 - OEIS

%I #12 Oct 11 2021 07:43:04

%S 1,3,1,4,2,1,5,2,2,1,6,2,2,2,1,7,2,2,2,2,1,8,2,2,2,2,2,1,9,2,2,2,2,2,

%T 2,1,10,2,2,2,2,2,2,2,1,11,2,2,2,2,2,2,2,2,1,12,2,2,2,2,2,2,2,2,2,1,

%U 13,2,2,2,2,2,2,2,2,2,2,1,14,2,2,2,2,2,2,2,2,2,2,2,1

%N A130296 * A097806.

%C Row sums give A016777.

%C A131032 = A097806 * A130296. [corrected by _Georg Fischer_, Oct 10 2021]

%F A130296 * A097806 as infinite lower triangular matrices; where A130296 = (1; 2,1; 3,1,1;...) and A097806 = the pairwise operator.

%e First few rows of the triangle are:

%e 1;

%e 3, 1;

%e 4, 2, 1;

%e 5, 2, 2, 1;

%e 6, 2, 2, 2, 1;

%e 7, 2, 2, 2, 2, 1;

%e ...

%Y Cf. A016777, A097806, A130296.

%K nonn,tabl

%O 1,2

%A _Gary W. Adamson_, Jun 10 2007

%E Definition corrected, a(36)=2 inserted and more terms from _Georg Fischer_, Oct 10 2021

%E More terms from _Michel Marcus_, Oct 11 2021