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 A037464 #12 Nov 03 2024 02:04:09 %S A037464 3,5,7,7,11,13,13,17,19,19,23,23,5,29,31,31,11,37,37,41,43,43,47,47, %T A037464 17,53,53,19,59,61,61,13,67,67,71,73,73,11,79,79,83,83,29,89,89,31,31, %U A037464 97,97,101,103,103,107,109,109,113,113,23,17,17,41,41,127,127,131,131,19 %N A037464 Bisection of A076605. %H A037464 Amiram Eldar, <a href="/A037464/b037464.txt">Table of n, a(n) for n = 1..10000</a> %F A037464 a(n) = max(A006530(2n-1), A006530(2n+1)). %F A037464 a(n) = A076605(2*n). - _Amiram Eldar_, Nov 03 2024 %t A037464 Table[ Last[ Table[ # [[1]]] & /@ FactorInteger[n^2 - 1]], {n, 2, 150, 2}] %o A037464 (PARI) a(n) = my(p = factor(4*n^2-1)[, 1]); p[#p]; \\ _Amiram Eldar_, Nov 03 2024 %Y A037464 Cf. A076605, A074399. %K A037464 nonn,easy %O A037464 1,1 %A A037464 _N. J. A. Sloane_, Nov 29 2002 %E A037464 Extended by _Robert G. Wilson v_, Dec 02 2002