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A046409 Palindromes with exactly 3 distinct palindromic prime factors. +0
4
66, 606, 2222, 2882, 3333, 5555, 6886, 7777, 26462, 39693, 145541, 167761, 226622, 248842, 339933, 347743, 662266, 664466, 668866, 682286, 993399, 996699, 2080802, 2284822, 6080806, 6264626, 9396939, 11444411, 11666611, 11777711 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Cf. A046329, A046377.

Sequence in context: A106212 A155022 A129218 this_sequence A128952 A101093 A056468

Adjacent sequences: A046406 A046407 A046408 this_sequence A046410 A046411 A046412

KEYWORD

nonn

AUTHOR

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

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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