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.
%I A374183 #8 Jul 01 2024 19:19:14 %S A374183 2,26,28,34,44,56,58,74,76,82,88,92,98,106,112,122,124,146,152,154, %T A374183 172,176,178,184,188,194,202,218,224,226,236,242,248,266,268,274,284, %U A374183 298,304,314,316,322,332,338,344,346,352,362,364,368,376,386,394,412,418 %N A374183 Numbers k such that K(15 / k) != K((-1)^floor(k/2)*k / 15), where K(a/b) is the Kronecker symbol. Row 4 of A374188. %o A374183 (SageMath) # see A374188 %o A374183 print(A374188_row(4, 350)) %Y A374183 Cf. A374188, A374180, A374181, A374182, A374184. %Y A374183 Cf. A372728 (Kronecker). %K A374183 nonn %O A374183 1,1 %A A374183 _Peter Luschny_, Jun 30 2024