A131922 - OEIS

%I #10 Jun 08 2023 04:55:56

%S 1,2,3,3,5,5,4,7,7,7,5,9,9,9,9,6,11,11,11,11,11,7,13,13,13,13,13,13,8,

%T 15,15,15,15,15,15,15,9,17,17,17,17,17,17,17,17,10,19,19,19,19,19,19,

%U 19,19,19,11,21,21,21,21,21,21,21,21,21,21,12,23,23,23,23,23,23,23,23,23,23,23

%N Triangle read by rows: 2*A002024 - A130296 as infinite lower triangular matrices.

%C Row sums = A001844: (1, 5, 13, 25, 41, 61, 85, ...).

%e First few rows of the triangle:

%e   1;

%e   2, 3;

%e   3, 5, 5;

%e   4, 7, 7, 7;

%e   5, 9, 9, 9, 9;

%e   ...

%Y Cf. A001844, A002024, A130296.

%K nonn,tabl

%O 0,2

%A _Gary W. Adamson_, Jul 29 2007

%E Edited and more terms from _Georg Fischer_, Jun 08 2023