Abstract
Recently,Andrews and Paule established the generating functions for the k-elongated plane partition function dk(n)and proved a large number of results on dk(n)with k=2,3.In particular,they posed some conjectures on congruences modulo powers of 3 for d2(n).Their work has attracted the attention of da Silva,Hirschhorn,Sellers and Smoot.Very recently,Smoot proved a congruence family for d2(n)which implies one conjecture due to Andrews and Paule by using the localization method.In this paper,we prove the rest two conjectures given by Andrews and Paule.