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.

A106379 Real part of Gaussian prime numbers such that the Gaussian primorial product up to them is a Gaussian prime plus one.

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%I A106379 #13 Aug 16 2025 09:34:39
%S A106379 1,2,3,6,5,11,10,18,12,19,10,13,5,20,6,50,74,112,40,140,139
%N A106379 Real part of Gaussian prime numbers such that the Gaussian primorial product up to them is a Gaussian prime plus one.
%C A106379 A106380 has the imaginary parts.
%H A106379 Sven Simon, <a href="/A106379/a106379_1.txt">Readable list for A106379/A106380</a>.
%e A106379 (1+i)*(1+2i)*(2+i)*3*(2+3i)*(3+2i) - 1 = (-195-195i) - 1 = (-196-195i), which is a Gaussian prime. This is the third number with the property, so a(3) = 3.
%Y A106379 Cf. A103431, A103432, A106377, A106380, A106381, A106383.
%K A106379 nonn,more
%O A106379 1,2
%A A106379 _Sven Simon_, Apr 30 2005
%E A106379 Offset corrected and a(16)-a(21) added by _Amiram Eldar_, Aug 16 2025