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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.

A355557 a(n) is the smallest position in the subtract-a-prime game for which the value of the Sprague-Grundy function (or nim-value) is n.

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%I A355557 #8 Apr 09 2024 15:07:36
%S A355557 0,2,4,6,8,19,21,23,43,48,67,156
%N A355557 a(n) is the smallest position in the subtract-a-prime game for which the value of the Sprague-Grundy function (or nim-value) is n.
%C A355557 a(12) > 32452842 (if it exists). See A014589.
%C A355557 a(12) > 10^9 if it exists. - _Bert Dobbelaere_, Apr 09 2024
%e A355557 a(5) = 19, because the smallest k for which A014589(k) = 5 is k = 19.
%Y A355557 Cf. A014589, A019307, A297963, A355556.
%K A355557 nonn,more
%O A355557 0,2
%A A355557 _Pontus von Brömssen_, Jul 09 2022

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