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A030701
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Decimal expansion of 4^n contains no zeros (probably finite).
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28
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0, 1, 2, 3, 4, 7, 8, 9, 12, 14, 16, 17, 18, 36, 38, 43
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OFFSET
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1,3
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COMMENTS
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Integers in A007377 / 2. Conjectured to be finite, and probably complete. - M. F. Hasler, Mar 08 2014
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LINKS
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Table of n, a(n) for n=1..16.
M. F. Hasler, Zeroless powers, OEIS Wiki, Mar 07 2014
Eric Weisstein's World of Mathematics, Zero
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PROG
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(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
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CROSSREFS
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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 A218785 A267373
Adjacent sequences: A030698 A030699 A030700 * A030702 A030703 A030704
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KEYWORD
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nonn,base,fini
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AUTHOR
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Eric W. Weisstein
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EXTENSIONS
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Offset corrected and initial 0 added by M. F. Hasler, Mar 07 2014
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STATUS
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approved
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