Convolution of A023531 and A023532.

Terms

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