# A071305 (b-file synthesized from sequence entry) 1 1 2 8 3 144 4 27648 5 37324800 6 300987187200 7 13311459341107200 8 3680352278629318656000 9 6233449457837263300853760000 10 63077322283364184001573740871680000 11 3794639489522011031097665950031114403840000 12 1374795579913014967183977466315375129593674465280000