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A140117 Numbers n for which A140116(n) uses fewer symbols than A007088(n). 1
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 (list; graph; refs; listen; history; text; internal format)
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
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
Sequence in context: A275474 A354192 A076351 * A328677 A039743 A070008
KEYWORD
nonn
AUTHOR
Rick L. Shepherd, May 08 2008
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)