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A073957 Indices of records of the sum of the anti-divisors function. 1
1, 3, 4, 5, 7, 10, 13, 17, 22, 25, 27, 28, 32, 38, 45, 52, 58, 60, 63, 67, 77, 94, 95, 105, 112, 115, 122, 130, 137, 143, 157, 158, 175, 193, 203, 238, 247, 270, 280, 292, 297, 315, 347, 357, 410, 423, 445, 462, 472, 473, 500, 553, 578, 630, 637, 675, 682, 742 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A066272 for definition of anti-divisor.

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..1000

MAPLE

with(numtheory);

P:= proc(n)

local a, b, i, k;

b:=0;

for i from 3 to n do

   a:=0;

   for k from 2 to i-1 do

     if abs((i mod k)- k/2) < 1 then a:=a+k; fi;

   od;

   if a>b then print(i); b:=a; fi;

od;

end:

P(1000);  # Paolo P. Lava, Jul 19 2011

CROSSREFS

Cf. A066272, A066417.

Sequence in context: A201025 A288451 A236384 * A309916 A162311 A003312

Adjacent sequences:  A073954 A073955 A073956 * A073958 A073959 A073960

KEYWORD

nonn,changed

AUTHOR

Jason Earls, Sep 03 2002

EXTENSIONS

Name clarified by Amiram Eldar, Jan 12 2020

STATUS

approved

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Last modified January 25 19:09 EST 2020. Contains 331249 sequences. (Running on oeis4.)