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A131614
Numbers k such that the decimal expansion of 3^k contains no 8.
1
0, 1, 2, 3, 5, 6, 8, 10, 11, 12, 13, 16, 17, 19, 21, 33, 36, 51, 55, 56, 100
OFFSET
1,3
COMMENTS
I conjecture that 100 is the last term.
MATHEMATICA
Join[{0}, Select[ Range@10000, FreeQ[ IntegerDigits[3^# ], 8] &]
PROG
(Magma) [n: n in [0..1000] | not 8 in Intseq(3^n) ]; // Vincenzo Librandi, May 06 2015
CROSSREFS
Cf. similar sequences listed in A131613.
Cf. A007377.
Sequence in context: A187899 A024609 A167056 * A275202 A233592 A320773
KEYWORD
base,fini,nonn
AUTHOR
Shyam Sunder Gupta, Sep 01 2007
EXTENSIONS
Adapted Mma and initial 0 added by Vincenzo Librandi, May 06 2015
STATUS
approved