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 A380034 #5 Jan 15 2025 08:43:31 %S A380034 1,2,3,4,5,6,7,9,12,13,14,15,17,21,28,31,35,41,42,45,51,54,60,61,67, %T A380034 75,89,90,111,118,133,147,155,163,176,185,186,195,205,231,246,277,307, %U A380034 323,343,368,369,377,383,411,429,455,471,479,490,502,545,565,567,627 %N A380034 Records in A380032. %C A380034 See comments in A380032. %H A380034 Michael De Vlieger, <a href="/A380034/b380034.txt">Table of n, a(n) for n = 1..66</a> %t A380034 (* Load function f at A025487 *) %t A380034 r = 0; %t A380034 s = Select[Union@ Flatten@ f[8][[3 ;; -1]], Not @* SquareFreeQ]; %t A380034 nn = Length[s]; Print[nn]; %t A380034 Reap[Monitor[ %t A380034 Do[k = s[[i]]; %t A380034 If[# > r, r = #; Sow[r]] &@ %t A380034 Count[Transpose@ {#, k/#} &@ #[[2 ;; Ceiling[Length[#]/2]]] &@ Divisors[k], %t A380034 _?((m = GCD @@ {##}; %t A380034 And[! MemberQ[{1, #2}, m], %t A380034 m == #1, %t A380034 ! Divisible[#1, rad[#2]]]) & @@ # &)], {i, nn}], i] ][[-1, 1]] %Y A380034 Cf. A380032, A380033. %K A380034 nonn %O A380034 1,2 %A A380034 _Michael De Vlieger_, Jan 11 2025