It is proved that if $\mathcal{A}$ is a set of positive integers with $1\in\mathcal{A}$ then almost all partitions of $n$ into the elements of $\mathcal{A}$ contain the summand 1.
Funct. Approx. Comment. Math.
37(2):
351-359
(September 2007).
DOI: 10.7169/facm/1229619659
