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A036379 Special connected numbers: minimal and maximal connected numbers of a given binary order i.e. those between two consecutive powers of 2. 1
15, 15, 45, 63, 85, 123, 153, 255, 323, 511, 603, 1023, 1139, 2047, 2227, 4095, 4369, 8189, 8777, 16383, 17219, 32767, 33667, 65535, 67591, 131069, 133897, 262143, 264967, 524285, 527621, 1048575, 1053443 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Observe in the sequence that although the values of 2^g-1 are often maximal marginal connected numbers, this is not an absolute rule.

EXAMPLE

Between 1024 and 2048 (i.e. in the range with binary order 11) 1139 and 2047 are the smallest and largest composite connected numbers.

CROSSREFS

Cf. A029827, A036277, A036280-A036290.

Sequence in context: A040211 A003891 A022349 * A070920 A056484 A056474

Adjacent sequences:  A036376 A036377 A036378 * A036380 A036381 A036382

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu)

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.