3,3
Calculated by Sridar K. Pootheri
Sequence in context: A001643 A005218 A131481 * A077900 A198443 A041231
Adjacent sequences: A001069 A001070 A001071 * A001073 A001074 A001075
nonn,hard
R. W. Robinson, rwr(AT)pollux.cs.uga.edu