Number of partitions of n into at most 2 copies of 1, 3 copies of 2, 4 copies of 3, ... .

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =4a(5) =5a(6) =8a(7) =10a(8) =14a(9) =18a(10) =25a(11) =32a(12) =43a(13) =54a(14) =71a(15) =88a(16) =114a(17) =141a(18) =180a(19) =221a(20) =278a(21) =340a(22) =423a(23) =515a(24) =634a(25) =768a(26) =938a(27) =1131a(28) =1372a(29) =1646