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A131245 A046854^2. 3
1, 2, 1, 3, 2, 1, 5, 5, 2, 1, 8, 9, 7, 1, 1, 13, 19, 13, 9, 2, 1, 21, 33, 34, 17, 11, 2, 1, 34, 65, 61, 53, 21, 13, 2, 1, 55, 111, 141, 97, 76, 25, 25, 2, 1, 89, 210, 248, 257, 141, 103, 29, 17, 2, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Left border = Fibonacci numbers. Row sums = A131246. A131243 is the square of the reflection triangle to A046854: A065941. Row sums of A131243 = (1, 3, 6, 14, 30, 67, 146, 322, 705, 1549,...).

LINKS

Table of n, a(n) for n=0..54.

FORMULA

A046854^2 as an infinite lower triangular matrix.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

3, 2, 1;

5, 5, 2, 1;

8, 9, 7, 2, 1;

13, 19, 13, 9, 2, 1;

21, 33, 34, 17, 11, 2, 1;

...

CROSSREFS

Cf. A131243, A131244, A131246, A046854, A065941.

Sequence in context: A131243 A038497 A091355 * A179927 A104446 A131345

Adjacent sequences:  A131242 A131243 A131244 * A131246 A131247 A131248

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jun 22 2007

STATUS

approved

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Last modified April 17 05:12 EDT 2021. Contains 343059 sequences. (Running on oeis4.)