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A069026 Smallest power of 4 with digit sum n, or 0 if no such number exists. 0

%I

%S 1,0,0,4,0,0,16,0,0,64,0,0,256,0,0,0,0,0,4096,0,0,16384,0,0,65536,0,0,

%T 0,0,0,1048576,0,0,0,0,0,16777216,0,0,67108864,0,0,268435456,0,0,

%U 4398046511104,0,0,0,0,0,0,0,0,0,0,0,4294967296,0,0,17179869184,0,0

%N Smallest power of 4 with digit sum n, or 0 if no such number exists.

%C a(3k)=0. If any other zero terms are really nonzero, their value is greater than 4^31. - Larry Reeves (larryr(AT)acm.org), Dec 21 2002

%Y Cf. A069025.

%K nonn,base

%O 1,4

%A _Amarnath Murthy_, Apr 02 2002

%E More terms from Larry Reeves (larryr(AT)acm.org), Dec 21 2002

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Last modified February 17 18:27 EST 2018. Contains 299296 sequences. (Running on oeis4.)