1,2

See A294370 for the inverse of this sequence, and additional comments.

Table of n, a(n) for n=1..67.

Index entries for sequences that are permutations of the natural numbers

a(A001651(i)*3^j) = A005408(i)*2^j for any i > 0 and j >= 0.

a(1) = 1 is suitable, and a(3^i) = 2^i for any i >= 0.

a(2) cannot equal 2 = a(3).

a(2) = 3 is suitable, and a(2*3^i) = 3*2^i for any i >= 0.

a(3) = 2*a(1) = 2.

Cf. A001651, A005408, A294370 (inverse).

Sequence in context: A108918 A316472 A082334 * A325985 A151749 A175911

Adjacent sequences: A294368 A294369 A294370 * A294372 A294373 A294374

nonn,easy

Rémy Sigrist, Oct 29 2017

approved