cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A071697 Product of twin primes of form (4*k+1,4*k+3), k>0.

This page as a plain text file.
%I A071697 #12 Sep 08 2022 08:45:06
%S A071697 35,323,899,1763,10403,19043,22499,39203,72899,79523,213443,272483,
%T A071697 324899,381923,412163,656099,675683,736163,777923,1102499,1127843,
%U A071697 1512899,1633283,1664099,1695203,2196323,2883203,2965283,3526883,3802499,3992003,4334723,4536899
%N A071697 Product of twin primes of form (4*k+1,4*k+3), k>0.
%F A071697 a(n) = A071695(n)*A071696(n).
%o A071697 (PARI) lista(nn) = {forprime(p=3, nn, if ((((p-1) % 4) == 0) && isprime(p+2), print1(p*(p+2), ", ")););} \\ _Michel Marcus_, Feb 24 2015
%o A071697 (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
%Y A071697 Cf. A037074, A071700.
%Y A071697 Cf. A071695, A071696.
%K A071697 nonn
%O A071697 1,1
%A A071697 _Reinhard Zumkeller_, Jun 04 2002
%E A071697 More terms from _Michel Marcus_, Feb 24 2015