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A122616 Sums of 5th powers of primes. 7

%I #5 Jun 13 2016 08:31:37

%S 32,64,96,128,160,192,224,243,256,275,288,307,320,339,352,371,384,403,

%T 416,435,448,467,480,486,499,512,518,531,544,550,563,576,582,595,608,

%U 614,627,640,646,659,672,678,691,704,710,723,729,736,742,755,761,768

%N Sums of 5th powers of primes.

%C After a finite number of integers which cannot be written as a sum of 5th powers of primes, all integers can be so written.

%H Giovanni Resta, <a href="/A122616/b122616.txt">Table of n, a(n) for n = 1..10000</a>

%F a(n) = a*32 + b*243 + c*3125 + d*16807 + e*161051 + ... where a,b,c,d,e,... are nonnegative integers. Sumset of A050997 Fifth powers of primes.

%t ok[n_] := {} != Quiet@ IntegerPartitions[n, All, Prime[ Range@ PrimePi@ Max[2, n^(1/5)]]^5, 1]; Select[Range[768], ok] (* _Giovanni Resta_, Jun 12 2016 *)

%Y Cf. A000040, A050997.

%K easy,nonn

%O 1,1

%A _Jonathan Vos Post_, Sep 21 2006

%E Several missing terms from _Giovanni Resta_, Jun 12 2016

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Last modified April 25 12:15 EDT 2024. Contains 371969 sequences. (Running on oeis4.)