Don Reble, <a href="/A034090/b034090_3.txt">Table of n, a(n) for n = 1..6524</a> (first 372 terms from T. D. Noe, terms 373 to 1000 from Donovan Johnson, terms 1001 to 2750 from Robert G. Wilson v)
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N. J. A. Sloane, Don Reble, <a href="/A034090/b034090_3.txt">Table of n, a(n) for n = 1..6524</a> (first 372 terms from _T. D. Noe_, terms 373 to 1000 from _Donovan Johnson_, terms 1001 to 2750 from Robert G. Wilson v)
Robert GN. J. A. Wilson v, Sloane, <a href="/A034090/b034090_3.txt">Table of n, a(n) for n = 1..27506524</a> (first 372 terms from _T. D. Noe_, terms 373 to 1000 from _Donovan Johnson_)
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DeleteDuplicates[Table[{n, DivisorSigma[1, n]-n}, {n, 5000}], GreaterEqual[ #1[[2]], #2[[2]]]&][[All, 1]] (* Harvey P. Dale, Jan 15 2023 *)
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Table of initial values of n, a(n), A034091(n) = f(a(n)), where f(k) = sigma(k)-k = A001065(k):
1, 1, 0
2, 2, 1
3, 4, 3
4, 6, 6
5, 8, 7
6, 10, 8
7, 12, 16
8, 18, 21
9, 20, 22
10, 24, 36
11, 30, 42
12, 36, 55
13, 48, 76
14, 60, 108
15, 72, 123
16, 84, 140
17, 90, 144
18, 96, 156
19, 108, 172
20, 120, 240
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