OFFSET
1,2
COMMENTS
This sequence is a self-inverse permutation of the positive integers with infinitely many fixed points.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000
Rémy Sigrist, PARI program
PROG
(PARI) \\ See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Jul 13 2024
STATUS
approved