
1, 2, 5, 6, 9, 11, 12, 20, 21, 26, 27, 29, 30, 32, 35, 44, 57, 59, 60, 71, 72, 77, 86, 92, 95, 96, 99, 107, 111, 120, 134, 140, 149, 150, 152, 159, 162, 164, 165, 170, 185, 186, 191, 192, 197, 204, 221, 227, 231, 237, 246, 249, 252, 260, 264, 266, 269, 275, 290, 297
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OFFSET

1,2


LINKS

Zak Seidov, Table of n, a(n) for n = 1..1000


EXAMPLE

20 is a term because 1 + 2*20^3 = 16001 is prime.


MAPLE

isA168550 := proc(n) isprime(1+2*n^3) ; end proc: for n from 1 to 400 do if isA168550(n) then printf("%d, ", n) ; end if; end do: # R. J. Mathar, Nov 30 2009


CROSSREFS

Cf. A201107, A033562, A049408.
Sequence in context: A075724 A049408 A138970 * A244737 A285347 A187836
Adjacent sequences: A168547 A168548 A168549 * A168551 A168552 A168553


KEYWORD

nonn


AUTHOR

JuriStepan Gerasimov, Nov 29 2009


EXTENSIONS

Terms beyond 21 from R. J. Mathar, Nov 30 2009
Example corrected by Jon E. Schoenfield, May 11 2019


STATUS

approved

