Apply partial sum operator 4 times to partition numbers.

Terms

a(0) =1a(1) =5a(2) =16a(3) =41a(4) =92a(5) =188a(6) =359a(7) =650a(8) =1128a(9) =1890a(10) =3075a(11) =4878a(12) =7571a(13) =11527a(14) =17254a(15) =25436a(16) =36988a(17) =53122a(18) =75435a(19) =106014a(20) =147573a(21) =203618a(22) =278657a(23) =378453a(24) =510344a(25) =683626a(26) =910031a(27) =1204301a(28) =1584896a(29) =2074841