# A012141 (b-file synthesized from sequence entry) 0 1 1 1 2 9 3 281 4 20913 5 2869329 6 613734393 7 185272366761 8 74333015297505 9 38107181118565665 10 24270343990842570345 11 18795056467624757017785 12 17394205995630055629900945 13 18964089582659357000823035505