# A000686 (b-file synthesized from sequence entry) 1 1 2 7 3 85 4 1777 5 63601 6 3882817 7 403308865 8 71139019777 9 21276992674561 10 10778161937857537 11 9238819435213784065 12 13390649605615389843457 13 32796747486424209782108161 14 135669064080920007649863745537 15 947468281528010179181982467702785 16 11166618111585805201637975219611631617