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A161675 Mersenne primes written in base 8. 0
3, 7, 37, 177, 17777, 377777, 1777777, 17777777777, 177777777777777777777, 377777777777777777777777777777, 377777777777777777777777777777777777, 1777777777777777777777777777777777777777777 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..12.

FORMULA

a(n) = A007094(A000668(n)).

CROSSREFS

Cf. A117293.

Sequence in context: A057625 A308392 A087208 * A208809 A086031 A174734

Adjacent sequences:  A161672 A161673 A161674 * A161676 A161677 A161678

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

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Last modified August 18 04:50 EDT 2019. Contains 326072 sequences. (Running on oeis4.)