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A116016 n+prime(n)+prime(prime(n)) is a cube, where prime(n) is the n-th prime. 1

%I #5 Jan 28 2014 04:32:13

%S 34780,147895,302689,449410,4801151,6717665

%N n+prime(n)+prime(prime(n)) is a cube, where prime(n) is the n-th prime.

%e 34780+prime(34780)+prime(prime(34780)) = 6434856 = 186^3.

%o (PARI) isok(n) = ispower(n + prime(n) + prime(prime(n)), 3); \\ _Michel Marcus_, Jan 27 2014

%Y Cf. A116011, A116012.

%K nonn

%O 1,1

%A _Giovanni Resta_, Feb 13 2006

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Last modified April 23 11:35 EDT 2024. Contains 371912 sequences. (Running on oeis4.)