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A008403 G-symmetric Costas arrays of order n that are inequivalent under dihedral group but are not given by the Welch construction. 3
0, 0, 0, 0, 1, 1, 0, 3, 0, 14, 0, 32, 4, 31, 0, 45, 0, 2, 0, 3, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

REFERENCES

CRC Handbook of Combinatorial Designs, C. Colbourn and J. Dinitz, Editors, IV.7: Costas Arrays by Herbert Taylor (IV.7.6, page 259, Table 2.29).

LINKS

Table of n, a(n) for n=1..23.

Eric Weisstein's World of Mathematics, Costas Array

CROSSREFS

Cf. A008404, A001440, A001441, A001442.

Sequence in context: A186748 A222754 A181905 * A138349 A135399 A275831

Adjacent sequences:  A008400 A008401 A008402 * A008404 A008405 A008406

KEYWORD

nonn,hard,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 23 13:32 EST 2018. Contains 299581 sequences. (Running on oeis4.)