Sum of the squares of the number of parts in all partitions of n.

Terms

a(0) =0a(1) =1a(2) =5a(3) =14a(4) =34a(5) =68a(6) =133a(7) =232a(8) =402a(9) =652a(10) =1048a(11) =1609a(12) =2465a(13) =3640a(14) =5358a(15) =7694a(16) =10993a(17) =15399a(18) =21498a(19) =29520a(20) =40394a(21) =54572a(22) =73425a(23) =97756a(24) =129710a(25) =170525a(26) =223428a(27) =290552a(28) =376551a(29) =484819