# A286721 (b-file synthesized from sequence entry) 0 1 1 12 2 159 3 2485 4 45474 5 959070 6 22963996 7 616224492 8 18331744896 9 599061555136 10 21339235262784 11 823098817664448 12 34183157124707200 13 1520908498941532800 14 72182781516370886400 15 3640264913563748243200 16 194408478299496756556800 17 10961007293837647131724800