A001440 Number of symmetric Costas arrays of order n that are inequivalent under dihedral group.

1, 1, 1, 1, 2, 5, 10, 9, 10, 14, 18, 17, 25, 23, 31, 20, 19, 10, 6, 4, 8, 5, 10, 0, 2, 2, 7, 0, 5, 4, 0, 0

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• hard
• more

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).

Crossrefs

Cf. A008404, A001441, A001442.