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A161675
Mersenne primes written in base 8.
0
3, 7, 37, 177, 17777, 377777, 1777777, 17777777777, 177777777777777777777, 377777777777777777777777777777, 377777777777777777777777777777777777, 1777777777777777777777777777777777777777777
OFFSET
1,1
FORMULA
a(n) = A007094(A000668(n)).
CROSSREFS
Cf. A117293.
Sequence in context: A057625 A308392 A087208 * A208809 A086031 A174734
KEYWORD
nonn,base
AUTHOR
Vladislav-Stepan Malakhovsky & Juri-Stepan Gerasimov, Jun 16 2009
EXTENSIONS
a(6) and a(10) corrected by R. J. Mathar, Aug 03 2009
STATUS
approved