# A036083 (b-file synthesized from sequence entry) 0 1 1 15 2 175 3 1750 4 15750 5 131250 6 1031250 7 7734375 8 55859375 9 391015625 10 2666015625 11 17773437500 12 116210937500 13 747070312500 14 4731445312500 15 29571533203125 16 182647705078125 17 1116180419921875 18 6755828857421875