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A294608 a(n) = Sum_{d|n} d^(d + 1 + n/d). 3
1, 17, 244, 4129, 78126, 1680410, 40353608, 1073758337, 31381061797, 1000000390882, 34522712143932, 1283918474699170, 51185893014090758, 2177953338091847410, 98526125335695332184, 4722366482878235412481, 239072435685151324847154 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MATHEMATICA
a[n_] := DivisorSum[n, #^(# + 1 + n/#) &]; Array[a, 17] (* Amiram Eldar, Oct 04 2023 *)
PROG
(PARI) {a(n) = sumdiv(n, d, d^(d+1+n/d))}
CROSSREFS
Cf. A294606.
Sequence in context: A051560 A259347 A324358 * A294810 A362233 A214175
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Nov 04 2017
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)