# A064563 (b-file synthesized from sequence entry) 1 144 2 225 3 9216 4 589824 5 3515625 6 37748736 7 2415919104 8 54931640625 9 154618822656 10 9895604649984 11 633318697598976 12 858306884765625 13 40532396646334464 14 2594073385365405696 15 13411045074462890625