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A145767
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Numbers n such that n^2 = p^3 + q^3, p, q primes (p<=q).
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2
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4, 228, 812340, 4935504, 13608420, 14218512, 25354032, 29463060, 48880608, 135516108, 194057640, 223078944, 412662012, 763311948, 764539380, 1409359200, 1998370272, 3408412644, 5397667572, 7650577620, 8224333236, 9401817516
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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n^2=p^3+q^3, p, q primes (p<=q).
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EXAMPLE
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Corresponding values of p and q (p <= q) are: 2, 11, 2137, 8929, 1801, 44111, 6637, 57241, 16931, 151477, 54083, 3889; 2, 37, 8663, 28703, 56999, 48817, 86291, 87959, 133597, 246011, 334717, 367823.
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PROG
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(PARI) {n1 = 40000; for(ia= 1, n1, a3 = prime(ia)^3; for ( ib= ia, n1, b3 = prime(ib)^3; c = a3 + b3; if(issquare(c), print([c, a3, b3]))))}
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CROSSREFS
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Cf. A086119 Numbers of the form p^3 + q^3, p, q primes.
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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