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A339018
Lexicographically earliest sequence of distinct nonnegative terms such that the numbers of digits between successive 1s are distinct.
1
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 12, 22, 13, 23, 21, 24, 25, 26, 14, 27, 28, 15, 29, 30, 32, 16, 33, 34, 35, 36, 17, 37, 38, 39, 40, 31, 42, 43, 44, 45, 46, 41, 47, 48, 49, 50, 52, 53, 18, 54, 55, 56, 57, 58, 59, 19, 60, 62, 63, 64, 65, 66, 51, 67, 68, 69, 70, 72, 73, 74, 61, 75, 76, 77, 78, 79
OFFSET
1,3
LINKS
EXAMPLE
There are 8 digits between the 1 of a(2) = 1 and the 1 of a(11) = 10: they are 2,3,4,5,6,7,8 and 9;
there is 1 digit between the 1 of a(11) = 10 and the first 1 of a(12) = 11: this is 0;
there is 0 digit between the first 1 of a(12) = 11 and the last 1 of a(12) = 11;
there are 2 digits between the last 1 of a(12) = 11 and the 1 of a(14) = 12: they are 2 and 0; etc.
All those gaps between successive 1s are distinct.
CROSSREFS
Cf. A273479.
Sequence in context: A130571 A275512 A332144 * A303948 A275413 A273376
KEYWORD
base,nonn
AUTHOR
Eric Angelini, Nov 19 2020
STATUS
approved