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A273880 Pick any pair of "2" digits in the sequence. Those two "2"s are separated by k digits. This is the lexicographically earliest sequence of distinct terms in which all the resulting values of k are distinct 1
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 30, 22, 31, 33, 34, 35, 23, 36, 37, 38, 39, 40, 41, 43, 44, 45, 46, 32, 47, 48, 49, 50, 51, 53, 54, 55, 42, 56, 57, 58, 52, 59, 24, 60, 61, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80, 81, 25, 83, 84, 85, 86, 87, 88, 89, 90, 91, 93, 94, 95, 96, 97, 98, 99, 100, 101 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The sequence starts with a(1)=0. It is then always extended with the smallest integer not yet present and not leading to a contradiction (which would mean producing a value of k already seen).

LINKS

Eric Angelini, Table of n, a(n) for n = 1..1011

CROSSREFS

See A273376 for the equivalent sequence dealing with digit-"1" pairs instead of "2".

Sequence in context: A258009 A108192 A250395 * A203565 A132263 A089868

Adjacent sequences:  A273877 A273878 A273879 * A273881 A273882 A273883

KEYWORD

nonn,base

AUTHOR

Eric Angelini and Jean-Marc Falcoz, Jun 02 2016

STATUS

approved

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Last modified August 13 22:46 EDT 2020. Contains 336473 sequences. (Running on oeis4.)