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A096173 Numbers n such that n^3+1 is an odd semiprime. 3
2, 4, 6, 16, 18, 22, 28, 42, 58, 60, 70, 72, 78, 100, 102, 106, 112, 148, 156, 162, 190, 210, 232, 280, 310, 330, 352, 358, 382, 396, 448, 456, 490, 568, 606, 672, 756, 786, 820, 826, 828, 856, 858, 876, 928, 970, 982, 1008, 1012, 1030, 1068, 1092, 1108, 1150 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

a(1)=2 because 2^3+1=9=3*3, a(13)=100: 100^3+1=1000001=101*9901.

CROSSREFS

Cf. A081256 largest prime factor of n^3+1, A096174 (n^3+1)/(n+1) is prime, A046315.

Sequence in context: A005179 A037019 A096174 * A114874 A100361 A069654

Adjacent sequences:  A096170 A096171 A096172 * A096174 A096175 A096176

KEYWORD

nonn

AUTHOR

Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 20 2004

EXTENSIONS

Corrected by Zak Seidov, Mar 08 2006

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Last modified February 16 05:39 EST 2012. Contains 205860 sequences.