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A213339
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Costas arrays such that the corresponding permutation is connected.
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4
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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
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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LINKS
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Table of n, a(n) for n=1..29.
Scott Rickard, costasarrays.org (information and papers about Costas arrays).
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CROSSREFS
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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: A029988 A050573 A223094 * A092438 A027207 A027231
Adjacent sequences: A213336 A213337 A213338 * A213340 A213341 A213342
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KEYWORD
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nonn,hard,more
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AUTHOR
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Joerg Arndt, Jun 09 2012
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STATUS
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approved
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