A210422 List the positions of all digits 8 in the concatenation of all terms, not necessarily in order. This is the lexicographically earliest such sequence.

2, 8, 4, 80, 7, 88, 11, 81, 15, 82, 18, 21, 83, 25, 84, 28, 31, 85, 35, 86, 38, 41, 87, 45, 89, 48, 51, 800, 56, 801, 61, 802, 66, 803, 71, 804, 76, 805, 98, 888, 8888, 880, 93, 806, 99, 881, 104, 807, 110, 808, 112, 118, 122, 809, 128, 810, 127, 137, 811

Offset

1,1

Comments

See A210415 for comments, links, and code.

Links

Danny Rorabaugh, Table of n, a(n) for n = 1..1000

Example

The sequence cannot start with 1 because the first digit is not 8. Let us start with 2: the second digit is equal to 8. The third digit cannot be 3 because the third digit is not 8. So let it be 4. In the next position we now have 80 because it is the minimum number greater than 8 and starting with the digit 8. And so on.

Crossrefs

Cf. A210414, A210415, A210416, A210417, A210418, A210419, A210420, A210421, A210423.

Sequence in context: A038214 A195923 A213456 * A085568 A054671 A203269

Adjacent sequences: A210419 A210420 A210421 * A210423 A210424 A210425

Keyword

nonn,base

Author

Paolo P. Lava, Mar 26 2012

Extensions

Name edited and a(25)-a(59) corrected by Danny Rorabaugh, Nov 30 2015

Status

approved