Sum_{i=0..n} Sum_{j=0..n} (i AND j), where AND is the binary logical AND operator.

Terms

a(0) =0a(1) =1a(2) =3a(3) =12a(4) =16a(5) =33a(6) =63a(7) =112a(8) =120a(9) =153a(10) =211a(11) =300a(12) =408a(13) =553a(14) =735a(15) =960a(16) =976a(17) =1041a(18) =1155a(19) =1324a(20) =1536a(21) =1809a(22) =2143a(23) =2544a(24) =2952a(25) =3433a(26) =3987a(27) =4620a(28) =5320a(29) =6105