A340254 Lexicographically earliest sequence of distinct nonnegative terms such that for any n >= 0, a(n+1) is obtained by altering the leftmost decimal digit (which is not a leading zero) in a(n) or if this is not possible by altering the rightmost leading zero in a(n).

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 29, 39, 49, 59, 69, 79, 89, 99, 90, 10, 20, 30, 40, 50, 60, 70, 80, 81, 11, 21, 31, 41, 51, 61, 71, 91, 92, 12, 22, 32, 42, 52, 62, 72, 82, 83, 13, 23, 33, 43, 53, 63, 73, 93, 94, 14, 24, 34, 44, 54, 64, 74, 84, 85, 15, 25, 35

Offset

0,3

Comments

This sequence appears to be a permutation of the nonnegative integers.

Links

Rémy Sigrist, Table of n, a(n) for n = 0..9999

Rémy Sigrist, PARI program for A340254

Prog

(PARI) See Links section.

Crossrefs

See A340250 for similar sequences.

Sequence in context: A248013 A088473 A317110 * A190876 A051885 A227378

Adjacent sequences: A340251 A340252 A340253 * A340255 A340256 A340257

Keyword

nonn,base

Author

Rémy Sigrist, Jan 02 2021

Status

approved