# A027174 (b-file synthesized from sequence entry) 2 9 3 58 4 264 5 1106 6 4495 7 18014 8 71652 9 283760 10 1120806 11 4419928 12 17413572 13 68569666 14 269941451 15 1062631046 16 4183370636 17 16471711736 18 64870158866 19 255541666976 20 1006930883396 21 3968854010936 22 15648092510618 23 61714841143568