1,1
Table of n, a(n) for n=1..4.
Cf. A051154, A051155, A051156.
Sequence in context: A269442 A203677 A099499 * A177918 A297488 A177816
Adjacent sequences: A051154 A051155 A051156 * A051158 A051159 A051160
nonn,easy
N. J. A. Sloane
approved