A043093 Every string of 2 consecutive base 7 digits contains exactly 2 distinct numbers.

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

Links

Table of n, a(n) for n=0..62.

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

Adjacent sequences: A043090 A043091 A043092 * A043094 A043095 A043096

Keyword

nonn,base

Author

Clark Kimberling

Status

approved