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A046408 Palindromes with exactly 2 distinct palindromic prime factors. 3
6, 22, 33, 55, 77, 202, 262, 303, 393, 505, 626, 707, 939, 1111, 1441, 1661, 1991, 3443, 3883, 7997, 13231, 15251, 18281, 19291, 20602, 22622, 22822, 24842, 26662, 28682, 30903, 31613, 33933, 35653, 37673, 38683, 39993, 60206, 60406, 60806 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

CROSSREFS

Cf. A046328, A046376.

Sequence in context: A035134 A075799 A046392 * A123017 A264043 A056821

Adjacent sequences:  A046405 A046406 A046407 * A046409 A046410 A046411

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Jun 15 1998.

STATUS

approved

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Last modified July 20 11:55 EDT 2018. Contains 312804 sequences. (Running on oeis4.)