Number of partitions of n with at most four part sizes.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =7a(6) =11a(7) =15a(8) =22a(9) =30a(10) =42a(11) =56a(12) =77a(13) =101a(14) =135a(15) =175a(16) =229a(17) =292a(18) =375a(19) =470a(20) =591a(21) =733a(22) =905a(23) =1103a(24) =1343a(25) =1615a(26) =1938a(27) =2309a(28) =2726a(29) =3211