A034771 Dirichlet convolution of d(n) (# of divisors) with b_n=2^(n-1).

1, 4, 6, 15, 18, 48, 66, 154, 267, 552, 1026, 2154, 4098, 8328, 16428, 33061, 65538, 131676, 262146, 525390, 1048716, 2099208, 4194306, 8393124, 16777251, 33562632, 67109392, 134234334, 268435458, 536904864, 1073741826, 2147549616