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A030701
Decimal expansion of 4^n contains no zeros (probably finite).
28
0, 1, 2, 3, 4, 7, 8, 9, 12, 14, 16, 17, 18, 36, 38, 43
OFFSET
1,3
COMMENTS
Integers in A007377 / 2. Conjectured to be finite, and probably complete. - M. F. Hasler, Mar 08 2014
LINKS
M. F. Hasler, Zeroless powers, OEIS Wiki, Mar 07 2014.
Eric Weisstein's World of Mathematics, Zero.
MATHEMATICA
Select[Range[0, 50], DigitCount[4^#, 10, 0]==0&] (* Paolo Xausa, Oct 07 2023 *)
PROG
(PARI) for(n=0, 99, vecmin(digits(4^n))&& print1(n", ")) \\ M. F. Hasler, Mar 07 2014
(Magma) [n: n in [0..500] | not 0 in Intseq(4^n)]; // Vincenzo Librandi, Mar 08 2014
CROSSREFS
For the zeroless numbers (powers x^n), see A238938, A238939, A238940, A195948, A238936, A195908, A195946, A195945, A195942, A195943, A103662.
For the corresponding exponents, see A007377, A008839, A030700, A030701, A008839, A030702, A030703, A030704, A030705, A030706, A195944.
For other related sequences, see A052382, A027870, A102483, A103663.
Sequence in context: A047202 A064953 A097503 * A305924 A328134 A218785
KEYWORD
nonn,base,changed
EXTENSIONS
Offset corrected and initial 0 added by M. F. Hasler, Mar 07 2014
STATUS
approved