A128291 Complement of A118248.

3, 5, 6, 9, 10, 12, 13, 14, 15, 17, 19, 20, 23, 24, 26, 27, 28, 30, 33, 34, 37, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59, 60, 61, 62, 63, 65, 66, 69, 71, 72, 73, 74, 77, 79, 80, 81, 82, 83, 84, 85, 86, 89, 91, 92, 94, 95, 96, 97, 98, 100

Offset

0,1

Comments

Also: Numbers whose binary representation is a substring of the concatenation of the binary representation of all smaller nonnegative integers not listed earlier. - M. F. Hasler, Dec 29 2012

Links

Table of n, a(n) for n=0..68.

Nick Hobson, Python program for this sequence

Example

The first term is 3, smallest integer whose binary representation "11"[2] is a substring of the concatenation of the smaller numbers 0,1,2 ~> concat(0,1,10)="0110".
Next is 5="101"[2], which is a substring of concat(0,1,2="10",4="100") = "0110100". Note that 3, since it occurs earlier, is excluded from the list of numbers which are concatenated. - M. F. Hasler, Dec 29 2012

Crossrefs

Cf. A048991, A048992, A118247, A118248.

Sequence in context: A133512 A344154 A065871 * A304434 A334133 A286061

Adjacent sequences: A128288 A128289 A128290 * A128292 A128293 A128294

Keyword

base,easy,nonn

Author

Nick Hobson, Feb 24 2007

Status

approved