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A101212 a(1) = 1; for n>=2, a(n) = A001222(n)th positive integer not yet in the sequence. 4
1, 2, 3, 5, 4, 7, 6, 10, 9, 11, 8, 14, 12, 15, 16, 19, 13, 20, 17, 22, 21, 23, 18, 27, 25, 26, 29, 30, 24, 32, 28, 36, 33, 34, 35, 39, 31, 38, 40, 43, 37, 44, 41, 46, 47, 45, 42, 52, 49, 51, 50, 54, 48, 57, 55, 59, 56, 58, 53, 63, 60, 62, 65, 69, 64, 67, 61, 70, 68, 72, 66, 76 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
A permutation of the positive integers.
LINKS
MATHEMATICA
terms = 72; a[1] = 1; a[n_] := a[n] = Complement[Range[Ceiling[6n/5]], Array[a, n-1]][[PrimeOmega[n]]]; Array[a, terms] (* Jean-François Alcover, Jun 06 2017 *)
CROSSREFS
Cf. A001222.
Inverse: A102454; A102453(n) = a(a(n)).
Cf. A102455.
Sequence in context: A072061 A255557 A261102 * A232641 A258746 A064706
KEYWORD
nonn
AUTHOR
Leroy Quet, Dec 13 2004
EXTENSIONS
More terms from Reinhard Zumkeller, Jan 09 2005
STATUS
approved

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Last modified June 22 21:50 EDT 2024. Contains 373610 sequences. (Running on oeis4.)