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A066649
Primes of the form a^2 + b^3 with a, b > 0.
12
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
OFFSET
1,1
EXAMPLE
A000040(26) = 101 = 10^2 + 1^3, therefore 101 is a term.
A000040(51) = a(13) = 233 = 225 + 8 = 15^2 + 2^3.
MATHEMATICA
lst={}; Do[Do[p=n^2+m^3; If[PrimeQ[p], AppendTo[lst, p]], {n, 5!}], {m, 5!}]; Take[Union[lst], 123] (* Vladimir Joseph Stephan Orlovsky, May 24 2009 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Dec 17 2001
STATUS
approved