# A218310 (b-file synthesized from sequence entry) 0 1 1 1 2 12 3 364 4 17248 5 1118816 6 92306432 7 9251542784 8 1091729307648 9 148280571406336 10 22785577791987712 11 3908379504145178624 12 740274425760340901888 13 153456630172316832628736 14 34557831428406144298647552 15 8401098284435734877893033984