This sequence is a way to extend the sequence A003763 in case of grids with odd number of nodes: a(n) is the number of cycles in odd-side square lattice with maximum possible length.
Artem M. Karavaev, Table of n, a(n) for n=1..10
a(1)-a(10) were obtained during a small programming contest (in Russian).
Artem M. Karavaev, Prehamilton Cycles page
Index entries for sequences related to graphs, Hamiltonian
Sequence in context: A339311 A200988 A201491 * A300390 A002142 A103732
Adjacent sequences: A181581 A181582 A181583 * A181585 A181586 A181587
Artem M. Karavaev, Oct 31 2010