# A274985 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 6 4 58 5 948 6 25992 7 1179016 8 87713040 9 10646068080 10 2101395344400 11 673242645670320 12 349671381118477440 13 294206779308703578240 14 400822226102433353285760 15 883965927408694948620295680 16 3155212287401150653204012531200