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 A106274 #17 Feb 16 2025 08:32:57 %S A106274 2,4,6,26,158 %N A106274 Numbers k for which the absolute value of the discriminant of the polynomial x^k - x^(k-1) - ... - x - 1 is prime. %C A106274 This polynomial is the characteristic polynomial of the Fibonacci and Lucas k-step recursions. Are the k-step recursions different -- in some way -- for the values of k that yield a prime discriminant? No other k < 10000. %H A106274 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Fibonaccin-StepNumber.html">Fibonacci n-Step Number</a>. %Y A106274 Cf. A106273 (discriminant of the polynomial x^n - x^(n-1) - ... - x - 1). %K A106274 hard,more,nonn %O A106274 1,1 %A A106274 _T. D. Noe_, May 02 2005