A127199 A monotonic doubly-fractal simple sequence. Erase the last (rightmost) digit of every integer: what is left is the sequence itself. The erased digits, one by one, form also the sequence itself.

1, 2, 11, 21, 112, 211, 1121, 2111, 11212, 21112, 112121, 211121, 1121211, 2111211, 11212112, 21112111, 112121122, 211121111, 1121211221, 2111211111

Offset

1,2

Links

Table of n, a(n) for n=1..20.

Crossrefs

Cf. A127204, A127274, A127303.

Sequence in context: A342945 A266202 A113721 * A085652 A111090 A111081

Adjacent sequences: A127196 A127197 A127198 * A127200 A127201 A127202

Keyword

base,nonn

Author

Eric Angelini, Mar 27 2007

Status

approved