OFFSET
1,2
COMMENTS
This is a self-inverse permutation of the positive integers. For fixed n, U(n,k) as defined above is a permution of 1..n. - Franklin T. Adams-Watters, Jul 25 2006
FORMULA
T(n,k) = n(n-1)/2 + U(n,k), where U(n,k) = ceiling(n/k) if ceiling(n/ceiling(n/k)) = k, otherwise U(n,k) = k. - Franklin T. Adams-Watters, Jul 25 2006
CROSSREFS
KEYWORD
AUTHOR
Leroy Quet, Jul 15 2006
EXTENSIONS
More terms from Franklin T. Adams-Watters, Jul 25 2006
STATUS
approved