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A036311 Composite numbers n such that digits of prime factors of n are either 2 or 5. +0
2
4, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1024, 1250, 1280, 1600, 2000, 2048, 2500, 2560, 3125, 3200, 4000, 4096, 5000, 5120, 6250, 6400, 8000, 8192, 10000, 10240, 12500, 12800 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Cf. A003592, A036302-A036325, A025612.

Sequence in context: A020169 A082934 A144570 this_sequence A020209 A046559 A032618

Adjacent sequences: A036308 A036309 A036310 this_sequence A036312 A036313 A036314

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Dec 15 1998.

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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