# A129762 (b-file synthesized from sequence entry) 1 1 2 13 3 104 4 615 5 3149 6 14912 7 67537 8 297945 9 1293832 10 5564911 11 23795465 12 101383680 13 431003105 14 1829784725 15 7761645928 16 32906509335 17 139466630773 18 590979780544 19 2503927125041 20 10608105770625 21 44940061502216