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%I #9 Jul 01 2024 19:18:54
%S 2,10,12,18,24,26,34,44,48,50,58,60,66,74,76,82,88,90,92,96,106,108,
%T 114,120,122,124,130,138,146,152,156,162,170,172,176,178,184,186,188,
%U 192,194,202,204,216,218,220,226,234,236,240,242,248,250,258,268,274
%N Numbers k such that K(7 / k) != K((-1)^floor(k/2)*k / 7), where K(a/b) is the Kronecker symbol. Row 2 of A374188.
%o (SageMath) # see A374188
%o print(A374188_row(2, 350))
%Y Cf. A374188, A374180, A374182, A374183, A374184.
%Y Cf. A372728 (Kronecker).
%K nonn
%O 1,1
%A _Peter Luschny_, Jun 30 2024