# A017609 (b-file synthesized from sequence entry) 0 16807 1 2476099 2 28629151 3 147008443 4 503284375 5 1350125107 6 3077056399 7 6240321451 8 11592740743 9 20113571875 10 33038369407 11 51888844699 12 78502725751 13 115063617043 14 164130859375 15 228669389707