1,6

It appears that (1) every term is either 1 or a prime and (2) every prime greater than 3 appears. Note that a prime can occur only a finite number of times. Similar to Fortune's conjecture (A005235) and McEachen's conjecture (A117825).

T. D. Noe, Table of n, a(n) for n=1..10000

Sequence in context: A251417 A100947 A096940 * A318664 A329031 A264483

Adjacent sequences: A141342 A141343 A141344 * A141346 A141347 A141348

nonn

T. D. Noe, Jun 26 2008

approved