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A114971
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3^n+n^3 is semiprime.
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0
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1, 4, 8, 14, 16, 22, 23, 32, 34, 50, 52, 62, 80
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| 4 is OK because 3^4 + 4^3 = 81 + 64 = 145 = 5*29 (semiprime).
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PROG
| (MAGMA)IsSemiprime:=func< n | &+[ k[2]: k in Factorization(n) ] eq 2 >; [ n: n in [1..95] | IsSemiprime(3^n+n^3)][From V. Librandi Dec 16 2010]
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CROSSREFS
| Sequence in context: A182841 A138634 A125495 * A179614 A175230 A175227
Adjacent sequences: A114968 A114969 A114970 * A114972 A114973 A114974
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KEYWORD
| nonn
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), Feb 22 2006
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