1,5
Cf. A081512, A081513.
Sequence in context: A174981 A067280 A167157 * A109206 A176506 A200596
Adjacent sequences: A081511 A081512 A081513 * A081515 A081516 A081517
nonn,tabl,more
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 27 2003
Corrected by Caleb M. Shor (cshor(AT)bates.edu), Sep 26 2007