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%I #13 Jan 28 2023 14:00:50
%S 1,4,16,64,256,16384,65536,262144,16777216,268435456,4294967296,
%T 17179869184,68719476736,4722366482869645213696,
%U 75557863725914323419136,77371252455336267181195264
%N Powers of 4 without the digit '0' in their decimal expansion.
%C Conjectured to be finite and complete. See the OEIS wiki page for further information, references and links.
%H M. F. Hasler, <a href="https://oeis.org/wiki/Zeroless_powers">Zeroless powers</a>, OEIS Wiki, Mar 07 2014
%F a(n)=4^A030701(n).
%t Select[4^Range[0,50],DigitCount[#,10,0]==0&] (* _Harvey P. Dale_, Aug 31 2021 *)
%o (PARI) for(n=0,99,vecmin(digits(4^n))&& print1(4^n","))
%Y For the zeroless numbers (powers x^n), see A238938, A238939, A238940, A195948, A238936, A195908, A195946, A195945, A195942, A195943.
%Y For the corresponding exponents, see A007377, A008839, A030700, A030701, A030702, A030703, A030704, A030705, A030706, A195944.
%Y For other related sequences, see A052382, A027870, A102483.
%K nonn,base
%O 1,2
%A _M. F. Hasler_, Mar 07 2014
%E Keyword:fini removed by _Jianing Song_, Jan 28 2023 as finiteness is only conjectured.
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