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A058040 (p_1,p_2,...,p_m) = prime factors of n; (m>1,k>0); n such that n = Sum_{i=1,2,..,m} k^(p_i). 0
12, 36, 576, 16464 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

No others < 1000000.

LINKS

Table of n, a(n) for n=0..3.

EXAMPLE

12=2^2*3=2^2+2^3 (k=2); 36=2^2*3^2=3^2+3^3 (k=3); 576=2^6*3^2=8^2+8^3 (k=8); 16464=2^4*3*7^3=4^2+4^3+4^7 (k=4);

CROSSREFS

Sequence in context: A216381 A085331 A225100 * A130164 A144973 A043358

Adjacent sequences:  A058037 A058038 A058039 * A058041 A058042 A058043

KEYWORD

nonn

AUTHOR

Naohiro Nomoto, Nov 21 2000

STATUS

approved

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Last modified June 18 17:05 EDT 2019. Contains 324214 sequences. (Running on oeis4.)