1,2

Table of n, a(n) for n=1..5.

Eric Weisstein's World of Mathematics, Hamiltonian Path

Eric Weisstein's World of Mathematics, Queen Graph

Cf. A158663.

Sequence in context: A258901 A062322 A100733 * A125048 A003920 A052504

Adjacent sequences: A158661 A158662 A158663 * A158665 A158666 A158667

nonn,more,hard

Eric W. Weisstein, Mar 24 2009

a(4) from Eric W. Weisstein, Dec 16 2013

a(5) from Eric W. Weisstein, Dec 26 2013

approved