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A066649
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Primes of the form a^2 + b^3 with a, b > 0.
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9
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2, 5, 17, 31, 37, 43, 73, 89, 101, 113, 127, 197, 223, 233, 241, 257, 269, 283, 337, 347, 353, 359, 379, 401, 443, 449, 487, 521, 577, 593, 599, 677, 701, 733, 743, 811, 827, 829, 919, 953, 1009, 1019, 1049, 1051, 1097, 1129, 1153, 1213, 1289, 1297, 1361
(list;
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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T. D. Noe, Table of n, a(n) for n = 1..10000
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EXAMPLE
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A000040(26) = 101 = 10^2 + 1^3, therefore 101 is a term.
A000040(51) = a(13) = 233 = 225 + 8 = 15^2 + 2^3.
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MATHEMATICA
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lst={}; Do[Do[p=n^2+m^3; If[PrimeQ[p], AppendTo[lst, p]], {n, 5!}], {m, 5!}]; Take[Union[lst], 123] [From Vladimir Joseph Stephan Orlovsky, May 24 2009]
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CROSSREFS
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Cf. A055394, A066650.
Cf. A000040, A078393, A078390.
Sequence in context: A106882 A172122 A101009 * A075345 A045705 A125822
Adjacent sequences: A066646 A066647 A066648 * A066650 A066651 A066652
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller, Dec 17 2001
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STATUS
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approved
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