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A070049 Sum of two perfect powers. 6

%I #6 Oct 04 2013 09:56:36

%S 2,5,8,9,10,12,13,16,17,18,20,24,25,26,28,29,31,32,33,34,35,36,37,40,

%T 41,43,44,45,48,50,52,53,54,57,58,59,61,63,64,65,68,72,73,74,76,80,81,

%U 82,85,89,90,91,96,97,98,100,101,104,106,108,109,113,116,117,122,125

%N Sum of two perfect powers.

%o (PARI) lista(nn) = {vec = vector(nn, i, i); pp = concat(1, select(i->ispower(i) , vec)); sumpp = Set(); for (i = 1, #pp, for (j = 1, #pp, sumpp = Set(concat(sumpp, pp[i]+pp[j])););); for (i = 1, #sumpp, if (sumpp[i] <= nn, print1(sumpp[i], ", ")););} \\ _Michel Marcus_, Oct 04 2013

%Y Cf. A001597, complement of A075434.

%K nonn,easy

%O 1,1

%A Sharon Sela (sharonsela(AT)hotmail.com), May 06 2002

%E More terms from _Rick L. Shepherd_, Aug 24 2002

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)