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A060480
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Number of orbits of length n in map whose periodic points come from A059990.
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0
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1, 0, 2, 1, 6, 0, 18, 10, 56, 31, 186, 37, 630, 381, 2182, 1360, 7710, 511, 27594, 17459, 99858, 63457, 364722, 77650, 1342176, 860055, 4971008, 3195465, 18512790, 3975719
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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REFERENCES
| V. Chothi, G. Everest, T. Ward. S-integer dynamical systems: periodic points. J. Reine Angew. Math., 489 (1997), 99-132.
T. Ward. Almost all S-integer dynamical systems have many periodic points. Erg. Th. Dynam. Sys. 18 (1998), 471-486.
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LINKS
| Y. Puri and T. Ward, Arithmetic and growth of periodic orbits, J. Integer Seqs., Vol. 4 (2001), #01.2.1.
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FORMULA
| If b(n) is the n-th term of A059990, then a(n)=(1/n)* Sum_{ d divides n } mu(d)b(n/d)
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CROSSREFS
| A059990.
Sequence in context: A163553 A078503 A097407 * A094673 A196839 A089808
Adjacent sequences: A060477 A060478 A060479 * A060481 A060482 A060483
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KEYWORD
| easy,nonn
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AUTHOR
| Thomas Ward (t.ward(AT)uea.ac.uk)
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