%I #8 Apr 14 2023 11:36:12
%S 1,3,5,7,9,12,15,21,25,29,52,69,87,100,138,176,233,252,265,338,371,
%T 384,400,447,459,492,515,594,606,677,779,794,850,896,1100,1144,1204,
%U 1225,1243,1584,1674,1700,2214,2239,2265,2338,2568,3014,3621,3652,4027,4058,4437,4464,4584,4625,5111,5201,5281
%N Indices of records in A360179.
%H Michael De Vlieger, <a href="/A362128/b362128.txt">Table of n, a(n) for n = 1..8238</a>
%t nn = 6000; c[_] := False; h[_] := 0; f[n_] := DivisorSigma[0, n];
%t a[1] = j = u = 1; r = 0;
%t {1}~Join~Rest@ Reap[Do[
%t If[c[j],
%t k = j + f[u]; h[j]++; h[u],
%t k = f[j]; c[j] = True; h[j]++ ];
%t u = Min[u, j]; Set[{a[n], j}, {k, k}]; While[h[u] == 0, u++];
%t If[k > r, r = k; Sow[n]], {n, 2, nn}] ][[1, 1]]
%Y Cf. A000005, A360179, A362127.
%K nonn
%O 1,2
%A _Michael De Vlieger_, Apr 09 2023
