Convolution of A039599 with itself .

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =11a(5) =12a(6) =22a(7) =42a(8) =51a(9) =56a(10) =107a(11) =170a(12) =201a(13) =272a(14) =385a(15) =476a(16) =653a(17) =1042a(18) =1433a(19) =1590a(20) =1602a(21) =2386a(22) =4280a(23) =5644a(24) =5508a(25) =6110a(26) =9217a(27) =13324a(28) =17315a(29) =19512