A035057 - OEIS

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A035057

Numbers n such that 2^n does not contain the digit 1 (probably finite).

1, 2, 3, 5, 6, 8, 11, 12, 15, 16, 19, 23, 25, 28, 32, 33, 35, 38, 43, 52, 56, 59, 63, 66, 73, 91

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

No other terms < 10^6. - Chai Wah Wu, Aug 31 2017

LINKS

Table of n, a(n) for n=1..26.

MATHEMATICA

Select[Range[100], DigitCount[2^#, 10, 1]==0&] (* Harvey P. Dale, Jun 06 2013 *)

PROG

(Magma) [n: n in [0..1000] | not 1 in Intseq(2^n) ]; // Vincenzo Librandi, May 06 2015

(Python)

A035057_list = [n for n in range(1, 10**3) if '1' not in str(2**n)] # Chai Wah Wu, Aug 31 2017

CROSSREFS

Cf. similar sequences listed in A035064.

Sequence in context: A268226 A138529 A266409 * A005099 A161720 A105760

Adjacent sequences: A035054 A035055 A035056 * A035058 A035059 A035060

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Nov 15 1998

STATUS

approved