|
| |
|
|
A158763
|
|
Number of equivalence classes of near-normal sequences NN(2n).
|
|
0
|
|
|
|
1, 2, 2, 3, 8, 14, 11, 24, 20, 18, 32, 12, 3, 20, 9, 8, 5, 1, 1, 1
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
COMMENTS
|
Number of rows of Table 1 of Djokovic, pp.9-14, where "n" in the table is 2n as indexed in this sequence.
|
|
|
REFERENCES
|
D. Z. Djokovic, Aperiodic complementary quadruples of binary sequences, JCMCC 27 (1998), 3-31. Correction: ibid 30 (1999), p. 254.
|
|
|
LINKS
|
Table of n, a(n) for n=1..20.
Dragomir Z. Djokovic, Classification of near-normal sequences, arXiv:0903.4390 [math.CO], 2009.
Dragomir Z. Djokovic, Hadamard matrices of small order and Yang conjecture, arXiv:0912.5091 [math.CO], 2009.
Dragomir Z. Djokovic, A new Yang number and consequences, arXiv:1007.5434 [math.CO], 2010; Designs, Codes and Cryptography 54:3 (2010).
C. Koukouvinos, S. Kounias, J. Seberry, C.H. Yang and J. Yang, Multiplication of sequences with zero autocorrelation, Austral. J. Combin. 10 (1994), 5-15.
C. H. Yang, On composition of four-symbol delta-codes and Hadamard matrices, Proc. Amer. Math. Soc. 107 (1989), 763-776.
|
|
|
CROSSREFS
|
Sequence in context: A227380 A159789 A153932 * A001131 A019177 A153941
Adjacent sequences: A158760 A158761 A158762 * A158764 A158765 A158766
|
|
|
KEYWORD
|
nonn,more
|
|
|
AUTHOR
|
Jonathan Vos Post, Mar 26 2009
|
|
|
EXTENSIONS
|
5 more terms from the second Djokovic link, sent by Jonathan Vos Post and William P. Orrick, Jan 02 2010
|
|
|
STATUS
|
approved
|
| |
|
|
