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A162574
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Primes of the form 2^x+x+y+2^y, with x and y integers of any sign.
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3
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2, 7, 17, 23, 31, 43, 71, 73, 107, 541, 2129, 4111, 4243, 9239, 18457, 32789, 32803, 65563, 65687, 73757, 135197, 147487, 264221, 589859, 786469, 1048633, 1049117, 4194329, 4194847, 4227109, 8388637, 8392739, 8405029, 8650793, 16908329
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OFFSET
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1,1
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LINKS
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EXAMPLE
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MATHEMATICA
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f[x_, y_]:=2^x+x+y+2^y; lst={}; Do[Do[p=f[x, y]; If[PrimeQ[p], AppendTo[lst, p]], {y, -5!, 6!}], {x, -5!, 6!}]; Take[Union[lst], 5! ]
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CROSSREFS
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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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