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A046410
Palindromes with exactly 4 distinct palindromic prime factors.
3
6666, 22888822, 66888866, 413979314, 2228668222, 2668668662, 2888668882, 3315115133, 6668228666, 200446644002, 222266662222, 222446644222, 224488884422, 228866668822, 244666666442, 246664466642, 246686686642
OFFSET
1,1
CROSSREFS
Sequence in context: A236733 A015310 A043516 * A326811 A098936 A345601
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Jun 15 1998
EXTENSIONS
a(10)-a(17) from Donovan Johnson, Jul 20 2010
STATUS
approved