Number of 3-dimensional partitions of n up to conjugacy.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =7a(6) =13a(7) =25a(8) =49a(9) =93a(10) =181a(11) =351a(12) =687a(13) =1332a(14) =2591a(15) =5003a(16) =9644a(17) =18462a(18) =35208a(19) =66721a(20) =125840a(21) =235914a(22) =440020a(23) =816122a(24) =1505986a(25) =2764303a(26) =5048960a(27) =9176069