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A100806 a(1) = 1; for n>=2, a(n) = A001221(n)-th positive integer not yet in the sequence. 4
1, 2, 3, 4, 5, 7, 6, 8, 9, 11, 10, 13, 12, 15, 16, 14, 17, 19, 18, 21, 22, 23, 20, 25, 24, 27, 26, 29, 28, 32, 30, 31, 34, 35, 36, 37, 33, 39, 40, 41, 38, 44, 42, 45, 46, 47, 43, 49, 48, 51, 52, 53, 50, 55, 56, 57, 58, 59, 54, 62, 60, 63, 64, 61, 66, 68, 65, 69, 70, 72, 67, 73 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
A permutation of the positive integers.
LINKS
MATHEMATICA
Block[{a = {1}, nn = 72, s, P = FoldList[Times, Prime@ Range@ 12]}, s = Range[2, nn + LengthWhile[P, # <= nn &]]; Do[AppendTo[a, s[[PrimeNu@ i ]]]; s = Complement[s, a], {i, 2, nn}]; a] (* Michael De Vlieger, Sep 24 2017 *)
CROSSREFS
Inverse: A102451; A102450(n) = a(a(n)).
Cf. A102452.
Sequence in context: A358733 A086431 A143579 * A102451 A370791 A370790
KEYWORD
nonn
AUTHOR
Leroy Quet, Jan 04 2005
EXTENSIONS
More terms from Reinhard Zumkeller, Jan 09 2005
STATUS
approved

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Last modified July 13 23:31 EDT 2024. Contains 374290 sequences. (Running on oeis4.)