Let
denote the number
of -regular partitions
of . In recent years, some parities
for have been proved for small . In particular,
some infinite
families of congruences
modulo 2 for
were established by Cui and Gu.
Motivated by their work, we
prove several infinite families
of congruences modulo 4 for
.
Key Words: Regular partition,
congruence, theta function identities.