1,1
See A111105 for further information.
Table of n, a(n) for n=1..24.
Sequence in context: A218156 A160206 A111105 * A306097 A185377 A118059
Adjacent sequences: A137556 A137557 A137558 * A137560 A137561 A137562
nonn
R. J. Mathar, Apr 20 2008
approved