A046331 Palindromes with exactly 5 prime factors (counted with multiplicity).

252, 272, 464, 616, 656, 696, 828, 848, 888, 2552, 4004, 4554, 4664, 4884, 5445, 5775, 6006, 6996, 8118, 8228, 8778, 8888, 9009, 18081, 18981, 20202, 20502, 21012, 21812, 22022, 23432, 23532, 24642, 25552, 25652, 26862, 27272, 27672, 28182

Offset: 1

Author

Patrick De Geest, Jun 15 1998

Keywords

• nonn
• base

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A014614, A046318.

Programs

Mathematica

Select[Range[30000],#==IntegerReverse[#]&&PrimeOmega[#]==5&] (* The program uses the IntegerReverse function from Mathematica version 10 *) (* Harvey P. Dale, Jul 16 2016 *)