OFFSET
1,1
COMMENTS
For n>1, a(n)-1 is divisible by 4.
LINKS
Lars Blomberg, Table of n, a(n) for n = 1..500
Lars Blomberg, Illustration for n=3
Lars Blomberg, Illustration for n=4
Lars Blomberg, Illustration for n=5
Lars Blomberg, Illustration for n=10
Lars Blomberg, Illustration for n=16
Lars Blomberg, Illustration for n=35
CROSSREFS
KEYWORD
nonn
AUTHOR
Lars Blomberg, Jun 03 2020
STATUS
approved