# A124072 (b-file synthesized from sequence entry) 0 0 1 1 2 0 3 2 4 1 5 3 6 1 7 4 8 2 9 5 10 2 11 6 12 3 13 7 14 3 15 8 16 4 17 9 18 4 19 10 20 5 21 11 22 5 23 12 24 6 25 13 26 6 27 14 28 7 29 15 30 7 31 16 32 8 33 17 34 8 35 18 36 9 37 19 38 9 39 20 40 10 41 21 42 10 43 22 44 11 45 23 46 11 47 24 48 12 49 25 50 12 51 26