A131374 - OEIS

%I #6 May 07 2022 09:10:21

%S 1,2,1,1,2,1,2,1,3,1,1,3,3,3,1,2,1,7,3,4,1,1,4,5,8,6,4,1,2,1,12,5,15,

%T 6,5,1,1,5,7,16,15,16,10,5,1,2,1,18,7,36,15,27,10,6,1

%N A046854 + A065941 - A049310.

%C Row sums = the Lucas numbers, A000032 starting (1, 3, 4, 7, 11, 18,...).

%F A046854 + A065941 - A049310 as infinite lower triangular matrices.

%e First few rows of the triangle are:

%e 1;

%e 2, 1;

%e 1, 2, 1;

%e 2, 1, 3, 1;

%e 1, 3, 3, 3, 1

%e 2, 1, 7, 3, 4, 1;

%e 1, 4, 5, 8, 6, 4, 1;

%e ...

%Y Cf. A046854, A065941, A049310, A000032.

%K nonn,tabl

%O 0,2

%A _Gary W. Adamson_, Jul 03 2007