# A030966 (b-file synthesized from sequence entry) 1 1 2 2 3 7 4 31 5 159 6 958 7 6706 8 53654 9 482888 10 4828888 11 53117772 12 637413271 13 8286372532 14 116009215452 15 1740138231786 16 27842211708589 17 473317599046024 18 8519716782828440 19 161874618873740361 20 3237492377474807236