A046377 Palindromes with exactly 3 palindromic prime factors (counted with multiplicity).

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

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: A366430 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