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%I #8 Mar 06 2022 00:11:32
%S 1,1,2,2,3,4,3,4,5,6,5,6,7,8,9,8,9,10,11,12,13,13,14,15,16,17,18,19,
%T 21,22,23,24,25,26,27,28,34,35,36,37,38,39,40,41,42,55,56,57,58,59,60,
%U 61,62,63,64,89,90,91,92,93,94,95,96,97,98,99
%N Triangle read by rows: T(n,k) = Fibonacci(n) + k - 1.
%C Left border = Fibonacci numbers, right border = A081659.
%C Infinite lower triangular matrix by rows: n-th row = n terms of: F(n) followed by (F(n) + 1), (F(n) + 2), (F(n) + 3), ...
%H Andrew Howroyd, <a href="/A132919/b132919.txt">Table of n, a(n) for n = 1..1275</a> (rows 1..50)
%e First few rows of the triangle:
%e 1;
%e 1, 2;
%e 2, 3, 4;
%e 3, 4, 5, 6;
%e 5, 6, 7, 8, 9;
%e 8, 9, 10, 11, 12, 13;
%e ...
%o (PARI) T(n,k) = if(k<=n, fibonacci(n) + k - 1, 0); \\ _Andrew Howroyd_, Aug 10 2018
%Y Row sums are A132920.
%Y Cf. A127647, A127648, A081659, A000045.
%K nonn,tabl
%O 1,3
%A _Gary W. Adamson_, Sep 05 2007
%E Name changed and terms a(56) and beyond from _Andrew Howroyd_, Aug 10 2018
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