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URL: https://oeis.org/A072127

⇱ A072127 - OEIS

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A072127
Number of equivalence classes of pairs of complex Golay sequences of length n.
1
1, 1, 1, 2, 1, 3, 0, 17, 0, 20, 1, 52, 1, 0, 0, 204, 0, 24, 0, 340, 0, 12, 0, 1056, 0
OFFSET
1,4
COMMENTS
The number at length 20 is large but unknown. There are none at length 21.
LINKS
Curtis Bright, Ilias Kotsireas, Albert Heinle, and Vijay Ganesh, Enumeration of Complex Golay Pairs via Programmatic SAT, arXiv:1805.05488 [cs.LO], 2018. See Table 3.
R. Craigen, W. Holzmann and H. Kharaghani, Complex Golay sequences: structure and applications, Discrete Math., 252 (2002), 73-89.
CROSSREFS
Cf. A072128.
Sequence in context: A331094 A160169 A117778 * A186976 A160550 A172038
KEYWORD
nonn,nice,more
AUTHOR
N. J. A. Sloane, Jun 26 2002
EXTENSIONS
a(20)-a(25) from Vincenzo Librandi, Nov 27 2020
STATUS
approved