0,2

These are all the Mersenne nummers for which no digit is 0. The indices of these numbers are : 1,2,3,4,5,6,7,8,9,13,14,15,16,18,19,24,25,27,28,31,32,33,34,35,36,37,39,49,51,67,72,76,77,81,86 Are there more? I didn't find any above 2^86-1

Cf. A000225.

Sequence in context: A126646 A000225 A123121 this_sequence A057613 A146686 A129984

Adjacent sequences: A117057 A117058 A117059 this_sequence A117061 A117062 A117063

base,nonn

Luc Stevens (lms022(AT)yahoo.com), Apr 16 2006