A159963 Lodumo_3 of A102370 (sloping binary numbers).
0, 3, 6, 2, 1, 9, 4, 12, 5, 8, 11, 7, 10, 14, 15, 17, 13, 16, 19, 18, 20, 22, 23, 25, 21, 24, 27, 28, 26, 30, 31, 33, 29, 32, 35, 34, 36, 38, 39, 41, 37, 40, 43, 42, 45, 46, 44, 49, 48, 51, 54, 47, 52, 57, 55, 60, 50, 53, 63, 66, 58, 56, 69, 59, 61, 64, 67, 72, 62, 70, 65, 73, 75
Offset: 0
Formula
a(n)= lod_3(A102370(n)).
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