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A046378 Palindromes with exactly 4 palindromic prime factors (counted with multiplicity). 1
88, 484, 525, 686, 808, 2662, 3773, 3993, 4444, 6666, 9999, 14641, 24442, 34643, 36663, 40804, 52525, 134431, 224422, 336633, 1234321, 1596951, 2060602, 3090903, 11333311, 14699641, 22888822, 66888866, 104060401, 125888521 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Cf. A046330, A046410.

Sequence in context: A064022 A116065 A052049 * A187176 A183839 A137124

Adjacent sequences:  A046375 A046376 A046377 * A046379 A046380 A046381

KEYWORD

nonn,base

AUTHOR

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

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Last modified February 13 06:47 EST 2012. Contains 205451 sequences.