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A080939
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a(1)=3; for n>1, a(n)=a(n-1)-2 if n is already in the sequence, a(n)=a(n-1)+5 otherwise.
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2
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3, 8, 6, 11, 16, 14, 19, 17, 22, 27, 25, 30, 35, 33, 38, 36, 34, 39, 37, 42, 47, 45, 50, 55, 53, 58, 56, 61, 66, 64, 69, 74, 72, 70, 68, 66, 64, 62, 60, 65, 70, 68, 73, 78, 76, 81, 79, 84, 89, 87, 92, 97, 95, 100, 98, 96, 101, 99, 104, 102, 100, 98, 103, 101, 99
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| B. Cloitre, N. J. A. Sloane and M. J. Vandermast, Numerical analogues of Aronson's sequence, J. Integer Seqs., Vol. 6 (2003), #03.2.2.
B. Cloitre, N. J. A. Sloane and M. J. Vandermast, Numerical analogues of Aronson's sequence (math.NT/0305308)
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FORMULA
| a(n)-n (n >= 1) is periodic with period 168.
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CROSSREFS
| Cf. A080578, A080900, A080901.
Sequence in context: A152683 A083700 A021725 * A155724 A098737 A164654
Adjacent sequences: A080936 A080937 A080938 * A080940 A080941 A080942
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com) and Benoit Cloitre, Apr 04 2003
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