Bisection of A181888.

Terms

a(0) =0a(1) =64a(2) =784a(3) =4368a(4) =16368a(5) =48048a(6) =119392a(7) =262752a(8) =527136a(9) =983136a(10) =1728496a(11) =2894320a(12) =4651920a(13) =7220304a(14) =10874304a(15) =15953344a(16) =22870848a(17) =32124288a(18) =44305872a(19) =60113872a(20) =80364592a(21) =106004976a(22) =138125856a(23) =177975840a(24) =226975840a(25) =286734240a(26) =359062704a(27) =445992624a(28) =549792208a(29) =672984208