Triangle read by rows: T(n,k) = count of parts k in all plane partitions of n.

Terms

a(0) =1a(1) =4a(2) =1a(3) =11a(4) =2a(5) =1a(6) =28a(7) =7a(8) =2a(9) =1a(10) =62a(11) =15a(12) =5a(13) =2a(14) =1a(15) =137a(16) =38a(17) =13a(18) =5a(19) =2a(20) =1a(21) =278a(22) =76a(23) =28a(24) =11a(25) =5a(26) =2a(27) =1a(28) =561a(29) =164