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A069026 Smallest power of 4 with digit sum n, or 0 if no such number exists. 0
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, 0, 0, 0, 1048576, 0, 0, 0, 0, 0, 16777216, 0, 0, 67108864, 0, 0, 268435456, 0, 0, 4398046511104, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4294967296, 0, 0, 17179869184, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

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

LINKS

Table of n, a(n) for n=1..63.

CROSSREFS

Cf. A069025.

Sequence in context: A049207 A092219 A262227 * A133851 A062685 A192016

Adjacent sequences:  A069023 A069024 A069025 * A069027 A069028 A069029

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Apr 02 2002

EXTENSIONS

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

STATUS

approved

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Last modified December 11 22:41 EST 2018. Contains 318052 sequences. (Running on oeis4.)