# A116072 (b-file synthesized from sequence entry) 0 1 1 2 2 18 3 200 4 2870 5 49392 6 976668 7 21697104 8 532727910 9 14275220960 10 413469332276 11 12845983030608 12 425442421627132 13 14941814934855200 14 554044899080129400 15 21608731448473756320 16 883563752144886420870