# A004507 (b-file synthesized from sequence entry) 0 18 1 19 2 20 3 21 4 22 5 23 6 24 7 25 8 26 9 0 10 1 11 2 12 3 13 4 14 5 15 6 16 7 17 8 18 9 19 10 20 11 21 12 22 13 23 14 24 15 25 16 26 17 27 45 28 46 29 47 30 48 31 49 32 50 33 51 34 52 35 53 36 27 37 28 38 29 39 30 40 31 41 32 42 33 43 34 44 35 45 36 46 37 47 38 48 39 49 40 50 41 51 42 52 43 53 44 54 72 55 73 56 74 57 75