A018864 6^a(n) is smallest power of 6 beginning with n.

0, 3, 2, 6, 87, 1, 5, 41, 176, 9, 117, 4, 13, 94, 175, 8, 26, 89, 152, 215, 3, 30, 84, 129, 174, 219, 7, 16, 52, 88, 133, 169, 205, 241, 268, 2, 38, 65, 101, 128, 155, 182, 209, 236, 263, 6, 15, 42, 69, 87, 114, 141, 159, 177, 204, 222, 240, 267, 285, 10, 28, 46, 64, 82, 100