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.

A106383 Real part of Gaussian prime numbers such that the Gaussian primorial product up to them is a Gaussian prime plus i.

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%I A106383 #13 Aug 16 2025 09:34:56
%S A106383 1,2,3,2,3,4,2,6,5,5,5,4,1,25,20,3,29,36,74,112,140,48
%N A106383 Real part of Gaussian prime numbers such that the Gaussian primorial product up to them is a Gaussian prime plus i.
%C A106383 A106384 has the imaginary parts.
%H A106383 Sven Simon, <a href="/A106383/a106383_1.txt">Readable list of A106383/A106384</a>.
%e A106383 (1+i)*(1+2i)*(2+i)*3*(2+3i)*(3+2i)*(1+4i)*(4+i)*(2+5i) - i = (23205+9945i) - i = (23205+9944i), which is a Gaussian prime. This is the 7th number with the property, so a(7) = 2.
%Y A106383 Cf. A103431, A103432, A106377, A106379, A106381, A106384.
%K A106383 nonn,more
%O A106383 1,2
%A A106383 _Sven Simon_, Apr 30 2005
%E A106383 a(18)-a(22) from _Amiram Eldar_, Aug 16 2025