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A181348 Denominators of lower triangular matrix T:=log(F), with the matrix F:=A037027 (Fibonacci convolution matrix). 2
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 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,7

COMMENTS

The triangle of the numerators is given by A181347.

See the comments given in A181347.

LINKS

Table of n, a(n) for n=0..91.

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.

EXAMPLE

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];...

CROSSREFS

Cf. A037027, A181347.

Sequence in context: A175597 A309400 A294306 * A107682 A178239 A260534

Adjacent sequences:  A181345 A181346 A181347 * A181349 A181350 A181351

KEYWORD

nonn,easy,tabl

AUTHOR

Wolfdieter Lang, Oct 15 2010

STATUS

approved

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Last modified September 23 12:43 EDT 2021. Contains 347617 sequences. (Running on oeis4.)