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 A071697 Product of twin primes of form (4*k+1,4*k+3), k>0. 6
 35, 323, 899, 1763, 10403, 19043, 22499, 39203, 72899, 79523, 213443, 272483, 324899, 381923, 412163, 656099, 675683, 736163, 777923, 1102499, 1127843, 1512899, 1633283, 1664099, 1695203, 2196323, 2883203, 2965283, 3526883, 3802499, 3992003, 4334723, 4536899 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA a(n) = A071695(n)*A071696(n). PROG (PARI) lista(nn) = {forprime(p=3, nn, if ((((p-1) % 4) == 0) && isprime(p+2), print1(p*(p+2), ", ")); ); } \\ Michel Marcus, Feb 24 2015 (MAGMA) [16*n^2+16*n+3: n in [1..700]| IsPrime(4*n+1) and IsPrime(4*n+3)]; // Vincenzo Librandi, Feb 24 2015 CROSSREFS Cf. A037074, A071700. Cf. A071695, A071696. Sequence in context: A055658 A125773 A198397 * A220924 A220995 A264488 Adjacent sequences:  A071694 A071695 A071696 * A071698 A071699 A071700 KEYWORD nonn AUTHOR Reinhard Zumkeller, Jun 04 2002 EXTENSIONS More terms from Michel Marcus, Feb 24 2015 STATUS approved

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