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A080946 Numbers having exactly three divisors that are also suffices in binary representation. +0
5
15, 27, 30, 39, 45, 51, 54, 60, 75, 78, 85, 87, 90, 99, 102, 108, 111, 119, 120, 123, 125, 135, 147, 150, 153, 156, 159, 165, 170, 171, 174, 175, 180, 183, 187, 195, 198, 204, 205, 207, 216, 219, 221, 222, 238, 240, 243, 245, 246, 250, 267, 270, 279, 285, 287 (list; graph; listen)
OFFSET

1,1

COMMENT

A080942(a(n))=3.

CROSSREFS

Cf. A080943, A080945, A080947, A007088, A080940, A080941.

Sequence in context: A063552 A131541 A080945 this_sequence A110703 A091236 A053177

Adjacent sequences: A080943 A080944 A080945 this_sequence A080947 A080948 A080949

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 25 2003

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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