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 A377525 #22 Jan 11 2025 03:47:39 %S A377525 1,2,3,4,5,6,7,9,10,11,13,14,15,17,21,23,27,29,35,39,41,45,51,53,59, %T A377525 61,63,75,76,81,89,93,96,105,107,117,123,129,137,155,160,161,173,185, %U A377525 197,200,205,217,245,251,289,311,315,337,341,357,365,377,381,405,408 %N A377525 Records in A376281. %H A377525 Michael De Vlieger, <a href="/A377525/b377525.txt">Table of n, a(n) for n = 1..241</a> %t A377525 (* Load function f at A025487 *) %t A377525 r = 0; s = Select[Union@ Flatten@ f[12][[3 ;; -1]], Not@*SquareFreeQ]; %t A377525 nn = Length[s]; Print[nn]; %t A377525 Reap[Monitor[Do[k = s[[i]]; %t A377525 If[# > r, r = #; Sow[r]] &@ %t A377525 Count[Transpose@ {#, k/#} &@ #[[2 ;; Ceiling[Length[#]/2]]] &@ Divisors[k], %t A377525 _?(And[1 < GCD @@ {##}, Mod[#1, #2] != 0, %t A377525 Mod[#2, #1] != 0] & @@ # &)], {i, nn}], i] ][[-1, 1]] %Y A377525 Cf. A379336, A376281, A376687. %K A377525 nonn %O A377525 1,2 %A A377525 _Michael De Vlieger_, Jan 09 2025