OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..235 (terms 1..187 from Bill McEachen, terms 188..227 from Gord Palameta)
MATHEMATICA
Flatten[IntegerDigits/@MersennePrimeExponent[Range[30]]] (* Harvey P. Dale, Aug 05 2021 *)
CROSSREFS
KEYWORD
nonn,base,changed
AUTHOR
N. J. A. Sloane, following a suggestion of Bill McEachen, Jan 18 2006
STATUS
approved