A131627 - OEIS

A131627

Numbers k such that the decimal expansion of 3^k contains no 1.

1, 2, 3, 5, 6, 10, 14, 18, 25, 27, 29, 33, 37, 43

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OFFSET

1,2

COMMENTS

I conjecture that 43 is the last term.

LINKS

MATHEMATICA

Select[ Range@10000, FreeQ[ IntegerDigits[3^# ], 1] &]

PROG

(Magma) [n: n in [0..1000] | not 1 in Intseq(3^n) ]; // Vincenzo Librandi, May 06 2015

CROSSREFS

Cf. similar sequences listed in A131613.

KEYWORD

base,fini,nonn

AUTHOR

STATUS

approved