1,2

A permutation of the positive integers.

Table of n, a(n) for n=1..72.

Index entries for sequences that are permutations of the natural numbers

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 *)

Cf. A001222.

Inverse: A102454; A102453(n) = a(a(n)).

Cf. A102455.

Sequence in context: A072061 A255557 A261102 * A232641 A258746 A064706

Adjacent sequences: A101209 A101210 A101211 * A101213 A101214 A101215

nonn

Leroy Quet, Dec 13 2004

More terms from Reinhard Zumkeller, Jan 09 2005

approved