1,5
Table of n, a(n) for n=1..7.
Eric Weisstein's World of Mathematics, Graph Center.
Cf. A052437, ..., A052440.
Sequence in context: A214359 A198810 A096306 * A221394 A025602 A088126
Adjacent sequences: A052438 A052439 A052440 * A052442 A052443 A052444
nonn,more
Eric W. Weisstein
approved