A046330 Palindromes with exactly 4 prime factors (counted with multiplicity).

88, 232, 414, 424, 444, 484, 525, 585, 636, 666, 676, 686, 808, 858, 868, 999, 1881, 2002, 2332, 2442, 2662, 3003, 3663, 3773, 3993, 4114, 4444, 4774, 5005, 5115, 5225, 6116, 6556, 6666, 7007, 7227, 8668, 9999, 10101, 10701, 11011, 12321, 13431

Offset: 1

Author

Patrick De Geest, Jun 15 1998

Keywords

• nonn
• base

Links

• John Cerkan, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A014613, A046317, A046410.

Programs

Mathematica

Select[Range[14000],PalindromeQ[#]&&PrimeOmega[#]==4&] (* Harvey P. Dale, Jul 07 2024 *)