OFFSET
1,4
COMMENTS
Permuting the colors of the beads will not change the structure.
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..200
EXAMPLE
For n = 4, the 2 bracelet structures are: AABC, ABCD.
For n = 5, the 6 bracelet structures are: AAABC, AABAC, AABBC, ABABC, AABCD, ABACD.
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Oct 24 2019
STATUS
approved