%I #10 May 04 2024 14:29:55
%S 1,1,1,1,2,2,1,2,4,5,1,2,4,10,12,1,2,4,10,24,29,1,2,4,10,24,58,70,1,2,
%T 4,10,24,58,140,169,1,2,4,10,24,58,140,338,408,1,2,4,10,24,58,140,338,
%U 816,985
%N Triangle read by rows, first n terms of the sequence (1, 2, 4, 10, ...) followed by P(n), where (2, 4, 10, 12, ...) = twice Pell numbers.
%C Row sums = A000129(n), the Pell numbers: (1, 2, 5, 12, ...).
%e First few rows of the triangle:
%e 1;
%e 1, 1;
%e 1, 2, 2;
%e 1, 2, 4, 5;
%e 1, 2, 4, 10, 12;
%e 1, 2, 4, 10, 24, 29;
%e 1, 2, 4, 10, 24, 58, 70;
%e 1, 2, 4, 10, 24, 58, 140, 169;
%Y Cf. A000129.
%K nonn,tabl
%O 0,5
%A _Gary W. Adamson_, Sep 01 2008