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A046377 Palindromes with exactly 3 palindromic prime factors (counted with multiplicity). 2
8, 44, 66, 99, 242, 343, 363, 404, 606, 909, 1331, 2222, 2882, 3333, 5555, 6886, 7777, 12221, 15851, 20402, 26462, 30603, 37873, 39693, 112211, 145541, 167761, 226622, 248842, 339933, 347743, 662266, 664466, 668866, 682286, 993399, 996699, 1030301, 1246421 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Lars Blomberg, Table of n, a(n) for n = 1..1000

EXAMPLE

The palindrome 996699 is a term since it has 3 factors 3 11 30203, all palindromic.

CROSSREFS

Cf. A046329, A046409.

Sequence in context: A078895 A046341 A046329 * A075816 A290787 A188148

Adjacent sequences:  A046374 A046375 A046376 * A046378 A046379 A046380

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Jun 15 1998

EXTENSIONS

More terms from Lars Blomberg, Nov 06 2015

STATUS

approved

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Last modified November 16 04:54 EST 2018. Contains 317257 sequences. (Running on oeis4.)