Second bisection of A061041: a(n) = A061041(2n+1) = (2*n+1)*(2*n+9).

Terms

a(0) =9a(1) =33a(2) =65a(3) =105a(4) =153a(5) =209a(6) =273a(7) =345a(8) =425a(9) =513a(10) =609a(11) =713a(12) =825a(13) =945a(14) =1073a(15) =1209a(16) =1353a(17) =1505a(18) =1665a(19) =1833a(20) =2009a(21) =2193a(22) =2385a(23) =2585a(24) =2793a(25) =3009a(26) =3233a(27) =3465a(28) =3705a(29) =3953