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A111632 Increasingly larger values in A110412. 0
1, 2, 3, 5, 17, 22, 26, 401, 626, 730, 1025, 1813, 4925, 7572, 19053, 28925, 51996, 115625, 175208, 374560, 435825, 687500, 978144, 1333976, 1346072, 2600466, 2867085, 4509012, 5146875, 8948550 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The last to appear is 1,2,3,5,8,9,10,11,15,18,19,21,22,25,30,34,42,45,46,58,69,70,81,90,126,133,158,202,276,465,...,.

LINKS

Table of n, a(n) for n=1..30.

MATHEMATICA

f[n_] := Plus @@ (DivisorSigma[0, n - # ] & /@ Most[Divisors[n]]); t = Table[0, {1000}]; Do[a = f[n]; If[a < 1000 && t[[a + 1]] == 0, t[[a + 1]] = n; Print[{a, n}]], {n, 10^6}]

CROSSREFS

Cf. A110412.

Sequence in context: A249410 A119405 A032733 * A049547 A049577 A121558

Adjacent sequences:  A111629 A111630 A111631 * A111633 A111634 A111635

KEYWORD

nonn

AUTHOR

Amarnath Murthy and Robert G. Wilson v, Aug 09 2005

STATUS

approved

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Last modified October 28 03:57 EDT 2021. Contains 348312 sequences. (Running on oeis4.)