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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A039953 Triangle of "canonical" optimal Golomb rulers. 3
1, 1, 2, 1, 3, 2, 1, 3, 5, 2, 1, 3, 6, 2, 5, 1, 3, 6, 8, 5, 2, 1, 3, 5, 6, 7, 10, 2, 1, 4, 7, 13, 2, 8, 6, 3, 1, 5, 4, 13, 3, 8, 7, 12, 2, 1, 3, 9, 15, 5, 14, 7, 10, 6, 2, 2, 4, 18, 5, 11, 3, 12, 13, 7, 1, 9, 2, 3, 20, 12, 6, 16, 11, 15, 4, 9, 1, 7 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

n-th row gives first differences of the (n+1)-th row of A106683. - Andrey Zabolotskiy, Aug 22 2017

REFERENCES

CRC Handbook of Combinatorial Designs, 1996, p. 315.

A. Kotzig and P. J. Laufer, Sum triangles of natural numbers having minimum top, Ars. Combin. 21 (1986), 5-13.

LINKS

Table of n, a(n) for n=1..78.

Distributed.Net, Project OGR

L. Miller, Golomb Rulers

B. Rankin, Golomb Ruler Calculations

J. B. Shearer, Golomb ruler table

N. J. A. Sloane, First few optimal Golomb rulers

Eric Weisstein's World of Mathematics, Golomb Ruler

Wikipedia, Golomb ruler

Index entries for sequences related to Golomb rulers

EXAMPLE

1;

1 2;

1 3 2;

1 3 5 2;

1 3 6 2 5;

1 3 6 8 5 2;

...

CROSSREFS

Cf. A003022, A036501.

These all start at 1. For rulers starting at 0, see A079283, A079287, A079423, A079425, A079426, A079430, A079433, A079434, A079435, A079454 and

A079467 A079604, A079605, A079606, A079607, A079608, A079625, A079634

Sequence in context: A002973 A071476 A071499 * A169742 A257077 A086414

Adjacent sequences:  A039950 A039951 A039952 * A039954 A039955 A039956

KEYWORD

nonn,tabl,nice

AUTHOR

N. J. A. Sloane

EXTENSIONS

Corrected by Philip Newton, Feb 06 2002

Corrected by Andrey Zabolotskiy, Aug 22 2017

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 July 23 15:58 EDT 2019. Contains 325258 sequences. (Running on oeis4.)