# A227820 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 3 4 21 5 271 6 5547 7 163449 8 6515653 9 336521487 10 21811917243 11 1731102129033 12 164965649015727 13 18576187504063053 14 2439032446517056113 15 369203184490259386011 16 63808807042506278660325 17 12485211237616581137265679 18 2745317734648664454455184459