# A056405 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 9 5 17 6 112 7 160 8 1182 9 3526 10 27550 11 60332 12 863283 13 1636608 14 19121869 15 84580104 16 501914374 17 1492170608 18 23751681540 19 47340359590 20 637742792823 21 2546703019081 22 18317620779149 23 49923584451714