OFFSET
1,4
COMMENTS
Colors may be permuted without changing the necklace structure.
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..200
FORMULA
a(n) = Sum_{k=1..4} A327396(n, k).
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Oct 05 2019
EXTENSIONS
Terms a(24) and beyond from Andrew Howroyd, Oct 10 2019
STATUS
approved