1,2
Equivalently, the odd Lynch-Bell numbers.
Table of n, a(n) for n=1..16.
Cf. A115569, A117912 (same but digits are all even).
Sequence in context: A102633 A052942 A240944 * A064411 A146556 A084229
Adjacent sequences: A117910 A117911 A117912 * A117914 A117915 A117916
base,easy,fini,full,nonn
Rick L. Shepherd, Apr 02 2006
approved