1,3
Cf. A081535, A081536, A081538.
Sequence in context: A100070 A135869 A054957 * A127726 A117063 A178911
Adjacent sequences: A081534 A081535 A081536 * A081538 A081539 A081540
more,nonn
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 28 2003