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A046381 Palindromes with exactly 7 palindromic prime factors (counted with multiplicity). 1
82728, 279972, 657756, 29077092, 85688658, 89288298, 561363165, 579828975, 582636285, 819828918, 2209559022, 5154334515, 5637337365, 6824774286, 8904664098, 19585758591, 42372027324, 62663836626, 70151815107, 167985589761, 4650120210564, 6552226222556 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Lars Blomberg, Table of n, a(n) for n = 1..39, terms < 10^16.

EXAMPLE

The palindrome 7051034301507 is a term since it has 7 factors 3^2 7 101^2 313 35053, all palindromic.

CROSSREFS

Cf. A046333.

Sequence in context: A253937 A218187 A010093 * A237330 A217127 A205269

Adjacent sequences:  A046378 A046379 A046380 * A046382 A046383 A046384

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