login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A133085 A133084 * A000012. 1
1, 3, 1, 6, 3, 1, 12, 8, 5, 1, 24, 19, 15, 5, 1, 48, 42, 37, 17, 7, 1, 96, 89, 83, 48, 28, 7, 192, 184, 177, 121, 86, 30, 9, 1, 384, 375, 367, 283, 227, 101, 45, 9, 1, 768, 758, 749, 629, 545, 293, 167, 47, 11, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Left column = A003945: (1, 3, 6, 12, 24, 48,...). Row sums = A133086: (1, 4, 10, 26, 64, 152,...).

LINKS

Table of n, a(n) for n=1..54.

FORMULA

A133084 * A000012 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

3, 1;

6, 3, 1;

12, 8, 5, 1;

24, 19, 15, 5, 1;

48, 42, 37, 17, 7, 1;

96, 89, 83, 48, 28, 7, 1;

...

CROSSREFS

Cf. A133084, A133086, A133080, A003945.

Sequence in context: A100861 A131031 A130452 * A039805 A094504 A107884

Adjacent sequences:  A133082 A133083 A133084 * A133086 A133087 A133088

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Sep 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 May 8 06:11 EDT 2021. Contains 343653 sequences. (Running on oeis4.)