login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A131410 A127647 * A000012. 4
1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 5, 5, 5, 5, 5, 8, 8, 8, 8, 8, 8, 13, 13, 13, 13, 13, 13, 13, 21, 21, 21, 21, 21, 21, 21, 21, 34, 34, 34, 34, 34, 34, 34, 34, 34, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 89, 144, 144, 144 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Row sums = A045925, n*Fib(n): (1, 2, 6, 12, 25, 48,...).

A104763 = A000012 * A127647.

LINKS

Reinhard Zumkeller, Rows n = 1..120 of triangle, flattened

FORMULA

A127647 * A000012 as infinite lower triangular matrices.

Partial sums of A127647 starting from the right, read by rows.

By rows, F(n) occurs n times.

EXAMPLE

First few rows of the triangle are:

1;

1, 1;

2, 2, 2;

3, 3, 3, 3;

5, 5, 5, 5, 5;

8, 8, 8, 8, 8, 8;

...

MATHEMATICA

Table[Fibonacci[n], {n, 15}, {n}] // Flatten (* Vincenzo Librandi, Jan 28 2017 *)

PROG

(Haskell)

a131410 n k = a131410_tabl !! (n-1) !! (n-1)

a131410_row n = a131410_tabl !! (n-1)

a131410_tabl = zipWith replicate [1..] $ tail a000045_list

-- Reinhard Zumkeller, Oct 07 2012

CROSSREFS

Cf. A127647, A045925, A104763, A000045.

Sequence in context: A022870 A237050 A235130 * A202453 A259529 A196052

Adjacent sequences:  A131407 A131408 A131409 * A131411 A131412 A131413

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jul 08 2007

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 16 21:59 EST 2019. Contains 320200 sequences. (Running on oeis4.)