A126969 First digit of a(n) is the a(n)-th digit of S [a(n+1) is the smallest available integer not yet present in S, subject to S being monotonically increasing].

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 21, 111, 311, 2111, 11111, 11112, 11113, 11114, 31111

Offset

0,3

Comments

An example of what logologists call a "self-acronymic" sequence.

Links

Table of n, a(n) for n=0..21.

Crossrefs

Cf. A126968.

Sequence in context: A285523 A126968 A254785 * A127274 A324280 A324281

Adjacent sequences: A126966 A126967 A126968 * A126970 A126971 A126972

Keyword

nonn,base

Author

Eric Angelini, Mar 22 2007

Status

approved