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%I #10 Nov 30 2015 21:26:55
%S 76,185,234,679,728,837,1112,1161,1270,1764,2470,2519,2628,3122,3443,
%T 3492,3555,3601,4095,4528,5886,6097,6146,6255,6749,7182,8540,9513,
%U 12208,12257,12366,12860,13293,14651,14909,14958,15067,15561,15624,15994
%N Half-sum (or average) of cubes of two distinct odd primes.
%C Even terms of A120398, divided by two. (Terms in A120398 are even iff they are the sum of two odd prime cubes.) Also, even terms of A138854 divided by two minus 4
%H <a href="/index/Su#ssq">Index to sequences related to sums of cubes</a>.
%F A138855 = { ( prime(i)^3+prime(j)^3 )/2 ; i>j>1 } = (1/2) { even terms in A120398 } = { even terms in A138854 } / 2 - 4.
%t With[{nn=40},Take[Union[Mean/@(Subsets[Prime[Range[2,nn/2]],{2}]^3)],nn]] (* _Harvey P. Dale_, Nov 16 2013 *)
%o (PARI) for(n=1,10^5, isA120398(2*n) & print1(n", "))
%Y Cf. A120398, A138854.
%K nonn
%O 1,1
%A _M. F. Hasler_, Apr 13 2008
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