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Search: id:A060480
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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
1
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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; listen)
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OFFSET
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1,3
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REFERENCES
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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
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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
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If b(n) is the n-th term of A059990, then a(n)=(1/n)* Sum_{ d divides n }\mu(d)a(n/d)
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CROSSREFS
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A059990.
Sequence in context: A091615 A078503 A097407 this_sequence A094673 A089808 A126342
Adjacent sequences: A060477 A060478 A060479 this_sequence A060481 A060482 A060483
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KEYWORD
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easy,nonn
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AUTHOR
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Thomas Ward (t.ward(AT)uea.ac.uk)
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