One third the number of solid partitions of n with 6 parts.

Terms

a(0) =16a(1) =16a(2) =53a(3) =99a(4) =184a(5) =291a(6) =484a(7) =717a(8) =1092a(9) =1540a(10) =2180a(11) =2957a(12) =4022a(13) =5271a(14) =6914a(15) =8847a(16) =11278a(17) =14113a(18) =17618a(19) =21637a(20) =26515a(21) =32073a(22) =38679a(23) =46175a(24) =54969a(25) =64840a(26) =76300a(27) =89113a(28) =103803a(29) =120135