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%I #13 Sep 23 2023 03:39:02
%S 1,10,86,581,4148,31984,261080,2208196,19132652,168806740,1510676802
%N Number of primes generated from Euler's polynomial x^2 + x + 41 from x = 1 to 10^n.
%F a(n) = A331876(n) - 1. - _Amiram Eldar_, Sep 23 2023
%e a(4) = 4148 because the number of primes generated from Euler's polynomial x^2 + x + 41 from x = 1 to 10^4 are 4148.
%t a = 0; n = 1; t = {}; Do[If[PrimeQ[x^2 + x + 41], a = a + 1]; If[Mod[x, n] == 0, n = n*10; AppendTo[t, a]], {x, 1, 1000000000}]; t
%Y Cf. A005846, A056561, A331876.
%K nonn,more
%O 0,2
%A _Shyam Sunder Gupta_, Aug 11 2013
%E a(10) from _Amiram Eldar_, Sep 23 2023
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