OFFSET
3,7
COMMENTS
Cycles that differ by rotation or reflection are counted separately. By "n-sided cycles" we mean the cycles that can be drawn by connecting n equally spaced points on a circle (possibly self-intersecting).
LINKS
Ludovic Schwob, Table of n, a(n) for n = 3..1481
Ludovic Schwob, Illustration of T(6,k), 0<=k<=6
FORMULA
T(n,0) = T(n,n) = A295264(n).
EXAMPLE
Triangle begins:
1, 0, 0, 1;
1, 0, 4, 0, 1;
2, 5, 5, 5, 5, 2;
9, 12, 21, 36, 21, 12, 9;
31, 49, 147, 133, 133, 147, 49, 31;
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Ludovic Schwob, Aug 21 2023
STATUS
approved