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A343136 Positions of records in A188171. 0
1, 5, 45, 315, 585, 2205, 2925, 9945, 17325, 28665, 45045, 135135, 225225, 405405, 675675, 1576575, 2027025, 2297295, 3828825, 6891885, 11486475, 26801775, 34459425, 43648605, 72747675, 130945815, 218243025, 509233725, 654729075, 1003917915, 1527701175, 3011753745, 4583103525 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..33.

EXAMPLE

585 is in the sequence as A188171(585) = 4 via the divisors 5, 13, 45 and 117 and no positive integer < 585 has at least four such (5 (mod 8)) divisors.

MATHEMATICA

Function[{s, r}, Map[FirstPosition[s, #][[1]] &, r]] @@ {#, Union@ FoldList[Max, #]} &@ Array[DivisorSum[#, 1 &, Mod[#, 8] == 5 &] &, 10^6] (* Michael De Vlieger, Apr 08 2021 *)

CROSSREFS

Cf. A188171, A343106.

Sequence in context: A302526 A303408 A241275 * A343106 A081070 A247494

Adjacent sequences:  A343132 A343134 A343135 * A343137 A343138 A343139

KEYWORD

nonn

AUTHOR

David A. Corneth, Apr 06 2021

STATUS

approved

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Last modified June 14 15:36 EDT 2021. Contains 345025 sequences. (Running on oeis4.)