Third-order spt function.

Terms

a(0) =0a(1) =0a(2) =1a(3) =7a(4) =28a(5) =85a(6) =217a(7) =497a(8) =1036a(9) =2044a(10) =3787a(11) =6797a(12) =11648a(13) =19558a(14) =31703a(15) =50645a(16) =78674a(17) =120932a(18) =181664a(19) =270600a(20) =395682a(21) =574329a(22) =820834a(23) =1166109a(24) =1634668a(25) =2279242a(26) =3142903a(27) =4312063a(28) =5859616a(29) =7927745