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A043093
Every string of 2 consecutive base 7 digits contains exactly 2 distinct numbers.
1
0, 1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 50, 51, 52, 53, 54, 55, 63, 64, 66, 67, 68, 69, 70, 71, 72, 74, 75, 76, 77, 78
OFFSET
0,3
CROSSREFS
Cf. A000975 (base-2 analog), A031941 or A043089 (base-3 analog), A031942 or A043090 (base-4 analog), A031943 or A043091 (base-5 analog), A043092, ..., A043096 (base-6 through base-10 analog).
Sequence in context: A047592 A187320 A255805 * A023802 A007915 A377019
KEYWORD
nonn,base
STATUS
approved