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A213339
Costas arrays such that the corresponding permutation is connected.
4
1, 1, 2, 6, 26, 80, 152, 348, 628, 1868, 3870, 7014, 11788, 15746, 18388, 19820, 17218, 14344, 9844, 6238, 3430, 1968, 814, 184, 84, 52, 190, 656, 132
OFFSET
1,3
LINKS
Scott Rickard, costasarrays.org (information and papers about Costas arrays).
CROSSREFS
Cf. A008404 (Costas arrays), A003319 (connected permutations), A213270 (Costas arrays that are involutions), A213271 (Costas arrays that are derangements), A213338 (Costas arrays that are cyclic).
Sequence in context: A316469 A322116 A223094 * A317867 A092438 A240296
KEYWORD
nonn,hard,more
AUTHOR
Joerg Arndt, Jun 09 2012
STATUS
approved