id:A153636 - OEIS Search Results

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Primes of the form 4x^3 + 27y^2, with x>0.

+0
3

31, 59, 283, 499, 743, 1327, 1399, 1579, 1823, 2687, 3271, 3299, 3371, 3559, 3767, 4027, 4243, 4567, 4639, 5323, 5351, 6079, 8059, 8123, 8563, 9463, 9851, 9887, 10111, 10247, 11003, 11119, 11399, 11939, 12163, 13127, 13163, 14243, 14783, 15907 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	MATHEMATICA	`nn=10^5; Select[Sort[Flatten[Table[4a^3+27b^2, {b, Sqrt[nn/27]}, {a, ((nn-27b^2)/4)^(1/3)}]]], PrimeQ[ # ] &]`
	CROSSREFS	`A153635 (positive or negative x)` `Cf. A154291` `Sequence in context: A043173 A043953 A139954 this_sequence A109840 A108293 A063339` `Adjacent sequences: A153633 A153634 A153635 this_sequence A153637 A153638 A153639`
	KEYWORD	`nonn`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), Dec 29 2008`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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