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A089620
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n^3 + n-th prime.
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0
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3, 11, 32, 71, 136, 229, 360, 531, 752, 1029, 1362, 1765, 2238, 2787, 3422, 4149, 4972, 5893, 6926, 8071, 9334, 10727, 12250, 13913, 15722, 17677, 19786, 22059, 24498, 27113, 29918, 32899, 36074, 39443, 43024, 46807, 50810, 55035, 59486, 64173
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OFFSET
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1,1
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COMMENTS
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Sum of reciprocals = 0.492721804..
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LINKS
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MATHEMATICA
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PROG
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(PARI) primeppwr(n, p) = { sr=0; for(x=1, n, y=x^p+prime(x); print1(y", "); sr+=1./y; ); print(); print(sr) }
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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