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A081746
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a(1)=1; for n>1, a(n)=a(n-1)-3 if n is already in the sequence, a(n)=a(n-1)+5 otherwise.
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2
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1, 6, 11, 16, 21, 18, 23, 28, 33, 38, 35, 40, 45, 50, 55, 52, 57, 54, 59, 64, 61, 66, 63, 68, 73, 78, 83, 80, 85, 90, 95, 100, 97, 102, 99, 104, 109, 106, 111, 108, 113, 118, 123, 128, 125, 130, 135, 140, 145, 142, 147, 144, 149, 146, 143, 148, 145, 150
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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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 is periodic with period 648.
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CROSSREFS
| Cf. A081747, A081748, A080578, A080900, A080901, A080939.
Sequence in context: A072353 A070397 A080904 * A080900 A080783 A016861
Adjacent sequences: A081743 A081744 A081745 * A081747 A081748 A081749
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre, Apr 05 2003
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