A102455 -id:A102455 - cp's OEIS frontend

A101212 a(1) = 1; for n>=2, a(n) = A001222(n)th positive integer not yet in the sequence.

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

Offset: 1

Leroy Quet, Dec 13 2004

nonn

A permutation of the positive integers.

Index entries for sequences that are permutations of the natural numbers

Cf. A001222.
Inverse: A102454; A102453(n) = a(a(n)).
Cf. A102455.

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 *)

More terms from Reinhard Zumkeller, Jan 09 2005

A102453 A101212(A101212(n)).

Original entry on oeis.org

1, 2, 3, 4, 5, 6, 7, 11, 9, 8, 10, 15, 14, 16, 19, 17, 12, 22, 13, 23, 21, 18, 20, 29, 25, 26, 24, 32, 27, 36, 30, 39, 33, 34, 35, 40, 28, 38, 43, 41, 31, 46, 37, 45, 42, 47, 44, 54, 49, 50, 51, 57, 52, 56, 55, 53, 59, 58, 48, 65, 63, 62, 64, 68, 69, 61, 60, 72, 70, 76, 67, 78

Offset: 1

Reinhard Zumkeller, Jan 09 2005

nonn

Permutation of the positive integers with inverse A102455.

Index entries for sequences that are permutations of the natural numbers

cp's OEIS Frontend

A101212 a(1) = 1; for n>=2, a(n) = A001222(n)th positive integer not yet in the sequence.

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