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

1,1

Links

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

Mathematica

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

Crossrefs

Cf. A014613, A046317, A046410.

Sequence in context: A062036 A184022 A116448 * A304519 A261142 A328872

Adjacent sequences: A046327 A046328 A046329 * A046331 A046332 A046333

Keyword

nonn,base

Author

Patrick De Geest, Jun 15 1998

Status

approved