Number of partitions of n into 3 distinct parts from [ 1,20 ].

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =1a(8) =2a(9) =3a(10) =4a(11) =5a(12) =7a(13) =8a(14) =10a(15) =12a(16) =14a(17) =16a(18) =19a(19) =21a(20) =24a(21) =27a(22) =30a(23) =33a(24) =36a(25) =38a(26) =40a(27) =42a(28) =43a(29) =44