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A131629
Numbers k such that the decimal expansion of 3^k contains no 3.
3
0, 2, 3, 4, 6, 7, 8, 10, 11, 14, 19, 27, 28, 34, 40, 50, 55, 84
OFFSET
1,2
COMMENTS
I conjecture that 84 is the last term.
MATHEMATICA
Join[{0}, Select[ Range@10000, FreeQ[ IntegerDigits[3^# ], 3] &]
PROG
(Magma) [n: n in [0..1000] | not 3 in Intseq(3^n) ]; // Vincenzo Librandi, May 06 2015
CROSSREFS
Cf. similar sequences listed in A131613.
Sequence in context: A186511 A066049 A160697 * A167701 A275157 A374633
KEYWORD
base,fini,nonn
AUTHOR
Shyam Sunder Gupta, Sep 01 2007
EXTENSIONS
Initial 0 added and Mathematica code adapted by Vincenzo Librandi, May 06 2015
STATUS
approved