Partition numbers of the form 3*k+1.

Terms

a(0) =1a(1) =1a(2) =7a(3) =22a(4) =385a(5) =490a(6) =1255a(7) =3010a(8) =3718a(9) =12310a(10) =17977a(11) =21637a(12) =75175a(13) =89134a(14) =204226a(15) =386155a(16) =451276a(17) =831820a(18) =1300156a(19) =1741630a(20) =5392783a(21) =6185689a(22) =10619863a(23) =18004327a(24) =20506255a(25) =34262962a(26) =49995925a(27) =64112359a(28) =104651419a(29) =150198136