# A010883 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 4 4 1 5 2 6 3 7 4 8 1 9 2 10 3 11 4 12 1 13 2 14 3 15 4 16 1 17 2 18 3 19 4 20 1 21 2 22 3 23 4 24 1 25 2 26 3 27 4 28 1 29 2 30 3 31 4 32 1 33 2 34 3 35 4 36 1 37 2 38 3 39 4 40 1 41 2 42 3 43 4 44 1 45 2 46 3 47 4 48 1 49 2 50 3 51 4 52 1 53 2 54 3 55 4 56 1 57 2 58 3 59 4 60 1 61 2 62 3 63 4 64 1 65 2 66 3 67 4 68 1 69 2 70 3 71 4 72 1 73 2 74 3 75 4 76 1 77 2 78 3 79 4 80 1