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A162292
Primes of the form k^3-k^2+1, k>0.
3
5, 19, 101, 181, 449, 2029, 2549, 8821, 13249, 16901, 21169, 23549, 34849, 38149, 41651, 45361, 62401, 77659, 89101, 108289, 115249, 122501, 130051, 163351, 191749, 433201, 505601, 564899, 697049, 720901, 795709, 875521, 960499, 990001
OFFSET
1,1
LINKS
FORMULA
a(n)= A111501(n)^3-A111501(n)^2+1 .
EXAMPLE
a(1)=2^3-2^2+1=5. a(2)=3^3-3^2+1=19. a(3)=5^3-5^2+1=101.
MATHEMATICA
lst={}; Do[s=n^3-n^2; If[PrimeQ[s+1], AppendTo[lst, s+1]], {n, 4*5!}]; lst
CROSSREFS
Cf. A087908, A162291, A111501 (corresponding k).
Sequence in context: A361278 A375654 A146144 * A321875 A359808 A005165
KEYWORD
nonn
AUTHOR
EXTENSIONS
Edited by R. J. Mathar, Jul 02 2009
STATUS
approved