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A115683 Numbers that are the product of 2 palindromes greater than 1. 15
4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 27, 28, 30, 32, 33, 35, 36, 40, 42, 44, 45, 48, 49, 54, 55, 56, 63, 64, 66, 72, 77, 81, 88, 99, 110, 121, 132, 154, 165, 176, 198, 202, 220, 222, 231, 242, 262, 264, 275, 282, 297, 302, 303, 308, 322, 330, 333 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

264=6*11.

CROSSREFS

Cf. A002113.

Sequence in context: A174891 A051035 A046349 * A175526 A192506 A091212

Adjacent sequences:  A115680 A115681 A115682 * A115684 A115685 A115686

KEYWORD

nonn,base

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 31 2006

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Last modified February 16 16:00 EST 2012. Contains 205938 sequences.