A100929 Sophie Germain primes multiplied by a safe primes.

10, 14, 15, 21, 22, 25, 33, 35, 46, 55, 69, 77, 94, 115, 118, 121, 141, 145, 161, 166, 177, 203, 205, 214, 235, 249, 253, 265, 287, 295, 319, 321, 334, 358, 371, 415, 445, 451, 454, 501, 517, 526, 529, 535, 537, 565, 581, 583, 623, 649, 655, 667, 681, 694, 718

Offset

1,1

Comments

a(n) = A005385(i) * A005384(j) for some i, j;

subsequence of A001358.

Links

Table of n, a(n) for n=1..55.

Eric Weisstein's World of Mathematics, Sophie Germain Prime

Eric Weisstein's World of Mathematics, Semiprime

Crossrefs

Cf. A100930.

Sequence in context: A172509 A036338 A108793 * A307980 A366413 A367018

Adjacent sequences: A100926 A100927 A100928 * A100930 A100931 A100932

Keyword

nonn

Author

Reinhard Zumkeller, Nov 22 2004

Status

approved