OFFSET
1,2
COMMENTS
This sequence has similarities with the Two-Up sequence (A090252) as a(n) is coprime to the next n terms (and to the floor(n/2) previous terms).
Prime numbers appear in their natural order.
LINKS
EXAMPLE
A355065(77) = 39, so a(39) = 77.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Jun 17 2022
STATUS
approved