A001442 G-symmetric Costas arrays of order n that are inequivalent under dihedral group.

1, 1, 0, 2, 1, 4, 0, 3, 0, 24, 0, 44, 4, 31, 0, 77, 0, 29, 0, 3, 0, 55, 0

Offset

1,4

References

CRC Handbook of Combinatorial Designs, C. Colbourn and J. Dinitz, Editors, 1996, 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.

Crossrefs

Cf. A008404, A001440, A001441, A008403.

Sequence in context: A087569 A341509 A048614 * A226952 A158285 A277994

Adjacent sequences: A001439 A001440 A001441 * A001443 A001444 A001445

Keyword

nonn,hard,more,nice

Author

N. J. A. Sloane.

Status

approved