A278944 Between two successive digits "9" there are 0, then 1, then 2, then 3, ... other digits.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 90, 91, 19, 10, 29, 11, 12, 92, 13, 14, 93, 15, 16, 39, 17, 18, 20, 49, 21, 22, 23, 24, 94, 25, 26, 27, 28, 95, 30, 31, 32, 33, 59, 34, 35, 36, 37, 38, 69, 40, 41, 42, 43, 44, 45, 96, 46, 47, 48, 50, 51, 52, 97, 53, 54, 55, 56, 57, 58, 79, 60, 61, 62, 63, 64, 65, 66, 89, 67, 68, 70, 71, 72, 73, 74, 75, 98, 76, 77, 78, 80, 81, 82, 83, 84, 900, 85, 86, 87, 88, 100, 101, 109, 102, 103, 104, 105, 106, 107, 190, 108

Offset

1,3

Comments

The sequence starts with a(1) = 0 and is always extended with the smallest integer not yet present that does not lead to a contradiction.

Links

Jean-Marc Falcoz, Table of n, a(n) for n = 1..1061

Example

There are 0 digit between "9" and "90"; there is 1 digit between the "9" of "90" and the "9" of "91" (this is the "0" of "90"); there are 2 digits between the "9" of "91" and the "9" of "19" (they are the "1" of "91" and the "1" of "19"); there are 3 digits between the "9" of "19" and the "9" of "29" (they are the "1" of "10", the "0" of "10" and the "2" of "29"); etc.

Crossrefs

Sequence in context: A250265 A239085 A273478 * A303171 A338831 A024664

Adjacent sequences: A278941 A278942 A278943 * A278945 A278946 A278947

Keyword

nonn,base

Author

Eric Angelini and Jean-Marc Falcoz, Dec 02 2016

Status

approved