OFFSET
0,3
COMMENTS
This sequence is a self-inverse permutation of the nonnegative integers.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..10922
Rémy Sigrist, PARI program
FORMULA
EXAMPLE
There are three numbers k such that A022290(k) = 11: 15, 19, 20,
- so a(15) = 20,
a(19) = 19,
a(20) = 15.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Feb 07 2023
STATUS
approved