A083177 Let P(k) = floor(k/2). Start with n, apply P repeatedly until reach 1. a(n) = concatenation of numbers obtained.

1, 11, 21, 211, 311, 321, 421, 4211, 5211, 5311, 6311, 6321, 7321, 7421, 8421, 84211, 94211, 95211, 105211, 105311, 115311, 116311, 126311, 126321, 136321, 137321, 147321, 147421, 157421, 158421, 168421, 1684211, 1784211, 1794211, 1894211

Offset

1,2

Links

Table of n, a(n) for n=1..35.

Formula

Let P(k) = floor(k/2). Start with n, apply P repeatedly until reaching 0. a(n) = concatenation of the differences of the successive numbers obtained. - David Wasserman, Oct 25 2004

Example

11 -> 5 -> 2 -> 1, hence a(11) = 6311.
11 -> 5 -> 2 -> 1 -> 0, hence a(11) = 6311.

Crossrefs

Sequence in context: A034922 A015446 A254208 * A110466 A110383 A123783

Adjacent sequences: A083174 A083175 A083176 * A083178 A083179 A083180

Keyword

base,nonn

Author

Amarnath Murthy, Apr 26 2003

Extensions

More terms from David Wasserman, Oct 25 2004

Status

approved