# A171799 (b-file synthesized from sequence entry) 0 1 1 2 2 20 3 648 4 78608 5 37949472 6 74258600000 7 589859028828288 8 18957096840069579008 9 2455889836782322072945152 10 1278835681226410156250000000000 11 2671465293024628033252951422140418048