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A081746 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. +0
3
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; listen)
OFFSET

1,2

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)

FORMULA

a(n) - n is periodic with period 648.

CROSSREFS

Cf. A081747, A081748, A080578, A080900, A080901, A080939.

Sequence in context: A072353 A070397 A080904 this_sequence A080900 A080783 A016861

Adjacent sequences: A081743 A081744 A081745 this_sequence A081747 A081748 A081749

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Apr 05 2003

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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