Number of parts in all thrice partitions of n.

Terms

a(0) =0a(1) =1a(2) =7a(3) =25a(4) =109a(5) =315a(6) =1179a(7) =3234a(8) =10789a(9) =29517a(10) =89217a(11) =238422a(12) =708782a(13) =1838147a(14) =5158957a(15) =13489966a(16) =36783238a(17) =94122716a(18) =252156677a(19) =638254389a(20) =1674465026a(21) =4215683662a(22) =10834938301a(23) =27032106456a(24) =68911496918a(25) =170196098655a(26) =427274190051