A181348 Denominators of lower triangular matrix T:=log(F), with the matrix F:=A037027 (Fibonacci convolution matrix).
1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 1, 3, 3, 2, 1, 1, 1, 15, 3, 1, 1, 1, 1, 1, 30, 15, 1, 3, 2, 1, 1, 1, 70, 15, 5, 3, 3, 1, 1, 1, 1, 105, 35, 10, 15, 3, 1, 2, 1, 1, 1, 7, 105, 70, 15, 3, 1, 3, 1, 1, 1, 1, 105, 7, 35, 35, 6, 5, 3, 3, 2, 1, 1, 1, 385, 105, 7, 105, 14, 5, 15, 3, 1, 1, 1, 1, 1, 3465
Offset: 0
Examples
The triangle starts with the rows[1]; [1,1]; [1,1,1]; [2,1,1,1]; [3,1,1,1,1]; ... The rational triangle T (with main diagonal elements 0) starts with the rows [0]; [1, 0]; [1, 2, 0]; [-1/2, 2, 3, 0]; [-1/3, -1, 3, 4, 0];...
Links
- Wolfdieter Lang, A181347/A181348, Logarithm of the Fibonacci matrix A037027
Formula
a(n,m) = denominator((log F)(n,m)), with the Fibonacci lower triangular matrix F=A037027.
Comments