Number of square plane partitions of n with strictly decreasing rows and columns.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =2a(9) =2a(10) =4a(11) =5a(12) =8a(13) =10a(14) =15a(15) =18a(16) =25a(17) =30a(18) =39a(19) =46a(20) =58a(21) =67a(22) =82a(23) =94a(24) =112a(25) =127a(26) =149a(27) =168a(28) =194a(29) =218