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A219174 Numbers n such that all the prime factors are either 2 or a Mersenne prime. 0
2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 31, 32, 36, 42, 48, 49, 54, 56, 62, 63, 64, 72, 81, 84, 93, 96, 98, 108, 112, 124, 126, 127, 128, 144, 147, 162, 168, 186, 189, 192, 196, 216, 217, 224, 243, 248, 252, 254, 256, 279, 288, 294, 324, 336, 343, 372 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

If n is in the sequence, then so is 2*n.

LINKS

Table of n, a(n) for n=1..61.

CROSSREFS

Cf. A000668, A056652, A108319.

Sequence in context: A010455 A269804 A318400 * A108319 A177500 A018772

Adjacent sequences:  A219171 A219172 A219173 * A219175 A219176 A219177

KEYWORD

nonn

AUTHOR

Jon Perry, Nov 13 2012

STATUS

approved

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Last modified July 22 07:23 EDT 2019. Contains 325216 sequences. (Running on oeis4.)