A327463 a(1) = 1; thereafter, a(n) is the reversal of the next prime after a(n - 1) in base 6 if n is prime, and the reversal of the next composite after a(n - 1) in base 6 if n is composite.

1, 2, 3, 4, 5, 1, 2, 4, 1, 4, 5, 1, 2, 4, 1, 4, 5, 1, 2, 4, 1, 4, 5, 1, 4, 1, 4, 1, 2, 4, 5, 1, 4, 1, 4, 1, 2, 4, 1, 4, 5, 1, 2, 4, 1, 4, 5, 1, 4, 1, 4, 1, 2, 4, 1, 4, 1, 4, 5, 1, 2, 4, 1, 4, 1, 4, 5, 1, 4, 1, 2, 4, 5, 1, 4, 1, 4, 1, 2, 4, 1, 4, 5, 1, 4, 1, 4, 1, 2, 4, 1, 4, 1, 4, 1, 4, 5

Offset

1,2

Comments

The sequence is written in base 10.

Conjecture: a(n) <= 5.

Links

Table of n, a(n) for n=1..97.

Crossrefs

For bases 3,5,6,7,10 see A326894, A327464, A327463 = the present sequence, A327241, A326344.

Sequence in context: A053827 A033926 A193042 * A279478 A355008 A050269

Adjacent sequences: A327460 A327461 A327462 * A327464 A327465 A327466

Keyword

nonn,base

Author

N. J. A. Sloane, Sep 27 2019

Status

approved