# A051596 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 20 12 30 13 40 14 50 15 60 16 70 17 80 18 90 19 100 20 200 21 300 22 400