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A144154 A Fibonacci triangle, row sums = A023610 0
1, 2, 1, 3, 2, 2, 5, 3, 4, 5, 8, 5, 6, 6, 5, 13, 8, 10, 9, 10, 8, 21, 13, 16, 15, 15, 16, 13, 34, 21, 26, 24, 25, 24, 26, 21, 55, 34, 42, 39, 40, 40, 39, 42, 34 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A023610: (1, 3, 7, 15, 30, 58,...).

LINKS

Table of n, a(n) for n=1..45.

FORMULA

The triangle as an infinite lower triangular matrix = A * B. A = a Fibonacci subsequences decrescendo triangle: (1; 2,1; 3,2,1; 5,3,2,1;...) and B = A127647, an infinite lower triangular matrix with the Fibonacci sequence as the main diagonal and the rest zeros.

EXAMPLE

First few rows of the triangle =

1;

2, 1;

3, 2, 2;

5, 3, 4, 3;

8, 5, 6, 6, 5;

13, 8, 10, 9, 10, 8;

21, 13, 16, 15, 15, 16, 13;

34, 21, 26, 24, 25, 24, 26, 21;

... Row 4 = (5, 3, 4, 3) = termwise products of (5, 3, 2, 1) and (1, 1, 2, 3).

CROSSREFS

A023610

Sequence in context: A210795 A210862 A298675 * A054710 A331779 A243556

Adjacent sequences:  A144151 A144152 A144153 * A144155 A144156 A144157

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Sep 12 2008

STATUS

approved

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Last modified April 15 08:31 EDT 2021. Contains 342977 sequences. (Running on oeis4.)