OFFSET
1,1
LINKS
Jon E. Schoenfield, Table of n, a(n) for n = 1..10000
FORMULA
Apart from a(1) = 2, a(n) == 5 (mod 6). - Hugo Pfoertner, Apr 25 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Jon E. Schoenfield, Apr 24 2021
STATUS
approved