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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. 2

%I #8 Apr 09 2024 15:07:36

%S 0,2,4,6,8,19,21,23,43,48,67,156

%N 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 a(12) > 32452842 (if it exists). See A014589.

%C a(12) > 10^9 if it exists. - _Bert Dobbelaere_, Apr 09 2024

%e a(5) = 19, because the smallest k for which A014589(k) = 5 is k = 19.

%Y Cf. A014589, A019307, A297963, A355556.

%K nonn,more

%O 0,2

%A _Pontus von Brömssen_, Jul 09 2022

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Last modified July 21 13:22 EDT 2024. Contains 374474 sequences. (Running on oeis4.)