|
Search: id:A005866
|
|
|
| A005866 |
|
The coding-theoretic function A(n,8).
(Formerly M0226)
|
|
+0
3
|
|
| 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 8, 16, 32
(list; graph; listen)
|
|
|
OFFSET
|
1,8
|
|
|
COMMENT
|
Since A(n,7) = A(n+1,8), A(n,7) gives essentially the same sequence.
The next term is known to be either 36 or 37 and is conjectured to be 36.
|
|
REFERENCES
|
A. E. Brouwer, J. B. Shearer, N. J. A. Sloane and W. D. Smith, New table of constant weight codes, IEEE Trans. Info. Theory 36 (1990), 1334-1380.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
LINKS
|
S. Litsyn, E. M. Rains and N. J. A. Sloane, A(n,d) tables.
N. J. A. Sloane and D. S. Whitehead, A New Family of Single-Error Correcting Codes [Shows a(18) >= 36.]
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Index entries for sequences related to A(n,d)
|
|
CROSSREFS
|
Cf. A005864, A005865.
Sequence in context: A104976 A010334 A010578 this_sequence A125584 A029078 A131799
Adjacent sequences: A005863 A005864 A005865 this_sequence A005867 A005868 A005869
|
|
KEYWORD
|
nonn,hard,nice
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
Search completed in 0.002 seconds
|
