A140117 Numbers n for which A140116(n) uses fewer symbols than A007088(n).

2, 4, 8, 15, 16, 31, 32, 33, 34, 63, 64, 65, 66, 68, 72, 125, 126, 127, 128, 129, 130, 131, 132, 136, 144, 160, 192, 247, 251, 253, 254, 255, 256, 257, 258, 259, 260, 264, 272, 288, 320, 384, 503, 507, 509, 510, 511, 512, 513, 514, 515, 516, 517, 518, 520, 521

Offset

1,1

Comments

The representation of n given by A140116(n) is more compact than the standard binary form of n for these numbers consisting of a sufficiently large proportion of 0's or of 1's among their bits.

Links

Table of n, a(n) for n=1..56.

Example

See also examples for A140116. 2180 is a term here as 2180 = 100010000100 (base 2), which uses 12 symbols, but A140116(2180) = 10112111210, which uses only 11 symbols including the two delimiter symbols (for which 2 is used).

Crossrefs

Cf. A140116, A007088.

Sequence in context: A275474 A354192 A076351 * A328677 A039743 A070008

Adjacent sequences: A140114 A140115 A140116 * A140118 A140119 A140120

Keyword

nonn

Author

Rick L. Shepherd, May 08 2008

Status

approved