A048222 a(n)=Sum{T(n,j): j=1,2,...,n}, array T given by A048212.

2, 4, 16, 40, 80, 134, 218, 338, 482, 682, 924, 1212, 1537, 1901, 2381, 2909, 3487, 4153, 4875, 5695, 6640, 7674, 8778, 10050, 11450, 12984, 14631, 16367, 18223, 20263, 22402, 24770, 27278, 29896, 32626, 35542, 38650, 41956