Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A127108
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A127108 Triangle read by rows, A127099 * A000012. +0
2
1, 5, 2, 7, 3, 3, 17, 10, 4, 4, 11, 5, 5, 5, 5, 35, 23, 15, 6, 6, 6, 15, 7, 7, 7, 7, 7, 7, 49, 34, 20, 20, 8, 8, 8, 8, 34, 21, 21, 9, 9, 9, 9, 9, 9, 55, 37, 25, 25, 25, 10, 10, 10, 10, 10, 23, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 119, 91, 67, 46, 30, 30, 12, 12, 12, 12, 12, 12 (list; table; graph; listen)
OFFSET

0,2

COMMENT

The operation A000012 * A127099 generates n-th row of the triangle by taking partial sums of n-th row of triangle A127099. Row 4 of A127099 (7, 6, 0, 4) becomes row 4 of A127108: (17, 10, 4, 4).

Row sums = A001001: (1, 7, 13, 35, 31, 91,...)

Left column of the triangle = A060640: (1, 5, 7, 17, 11, 35,...).

FORMULA

Triangle read by rows, A127099 * A000012

EXAMPLE

First few rows of the triangle are:

1;

5, 2;

7, 3, 3;

17, 10, 4, 4;

11, 5, 5, 5, 5;

35, 23, 15, 6, 6, 6;

15, 7, 7, 7, 7, 7, 7;

49, 34, 20, 20, 8, 8, 8, 8;

34, 21, 21, 9, 9, 9, 9, 9, 9;

55, 37, 25, 25, 25, 10, 10, 10, 10, 10;

...

CROSSREFS

Cf. A060640, A001001, A126988, A127093, A000203, A127094, A127095, A127096, A127098, A127099.

Sequence in context: A093591 A132800 A115321 this_sequence A093606 A064677 A088520

Adjacent sequences: A127105 A127106 A127107 this_sequence A127109 A127110 A127111

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jan 05 2007, Jul 27 2008

EXTENSIONS

Edited by N. J. A. Sloane (njas(AT)research.att.com), Aug 13 2008 at the suggestion of R. J. Mathar

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


AT&T Labs Research