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A080579 a(1)=1; for n>1, a(n)=a(n-1)+1 if n is already in the sequence, a(n)=a(n-1)+4 otherwise. 0
1, 5, 9, 13, 14, 18, 22, 26, 27, 31, 35, 39, 40, 41, 45, 49, 53, 54, 58, 62, 66, 67, 71, 75, 79, 80, 81, 85, 89, 93, 94, 98, 102, 106, 107, 111, 115, 119, 120, 121, 122, 126, 130, 134, 135, 139, 143, 147, 148, 152, 156, 160, 161, 162, 166, 170, 174, 175 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..58.

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)

CROSSREFS

Cf. A080455-A080458, A080036, A080037.

Sequence in context: A122798 A189464 A130333 * A165971 A160522 A194371

Adjacent sequences:  A080576 A080577 A080578 * A080580 A080581 A080582

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 23 2003

STATUS

approved

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Last modified May 22 09:31 EDT 2013. Contains 225519 sequences.