On partition functions and divisor sums
Journal of integer sequences, Tome 5 (2002) no. 1
Let n, r be natural numbers, with $r >= 2$. We present convolution-type formulas for the number of partitions of $n$ that are (1) not divisible by $r$; (2) coprime to $r$. Another result obtained is a formula for the sum of the odd divisors of $n$.
@article{JIS_2002__5_1_a6,
author = {Robbins, Neville},
title = {On partition functions and divisor sums},
journal = {Journal of integer sequences},
year = {2002},
volume = {5},
number = {1},
zbl = {1015.11002},
language = {en},
url = {http://geodesic.mathdoc.fr/item/JIS_2002__5_1_a6/}
}
Robbins, Neville. On partition functions and divisor sums. Journal of integer sequences, Tome 5 (2002) no. 1. http://geodesic.mathdoc.fr/item/JIS_2002__5_1_a6/