OFFSET
0,3
COMMENTS
T(n,k) is the number of unique circular arrays (A283614) given equivalence under rotation.
FORMULA
EXAMPLE
Table for n=[0..6], k=[0..12]
0 1 2 3 4 5 6 7 8 9 10 11 12
-----------------------------------------------------------------------------
0 | 1
1 | 1 2 1
2 | 1 2 5 4 2
3 | 1 2 7 16 18 12 4
4 | 1 2 11 32 70 92 82 40 10
5 | 1 2 13 56 166 348 510 520 350 140 26
6 | 1 2 17 88 336 932 1948 2992 3404 2756 1518 504 80
The 13 necklaces for n=5, k=2 are:
[+-+-+-+-0+0-],[+-+-+-+0+-0-],[+-+-+-+0-+0-],[+-+-+-0+-+0-]
[+-+-+0+-+-0-],[+-+-+0-+-+0-],[+-+-+-+-+0-0],[+-+-+-+-0+-0]
[+-+-+-+-0-+0],[+-+-+-+0-+-0],[+-+-+-0+-+-0],[+-+-+-0-+-+0]
[+-+-+0-+-+-0].
PROG
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Stefan Hollos, Apr 11 2017
STATUS
approved