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A296244 Odd numbers n such that A007733(n) is even but 2^x == -1 (mod n) is insoluble. 2
15, 21, 35, 39, 45, 51, 55, 63, 69, 75, 77, 85, 87, 91, 93, 95, 105, 111, 115, 117, 119, 123, 133, 135, 141, 143, 147, 153, 155, 159, 165, 175, 183, 187, 189, 195, 203, 207, 213, 215, 219, 221, 225, 231, 235, 237, 245, 247, 253, 255, 259, 261, 267, 273, 275, 279, 285, 287 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..58.

CROSSREFS

Set difference of A296243 and A014657.

Cf. A002326, A007733.

Sequence in context: A190358 A090999 A123912 * A309005 A225916 A128279

Adjacent sequences:  A296241 A296242 A296243 * A296245 A296246 A296247

KEYWORD

nonn

AUTHOR

Max Alekseyev, Dec 09 2017

STATUS

approved

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Last modified October 23 03:21 EDT 2019. Contains 328335 sequences. (Running on oeis4.)