# A085389 (b-file synthesized from sequence entry) 1 1 2 2 3 12 4 100 5 1080 6 14406 7 229376 8 4251528 9 90000000 10 2143588810 11 56757583872 12 1654301902188 13 52644347205632 14 1816448730468750 15 67553994410557440 16 2694045224950414864 17 114692890480116793344 18 5191945444217181018258