A115681 Brilliant numbers (A078972) whose digit reversal is the product of 2 palindromes greater than 1.

4, 6, 9, 21, 121, 253, 407, 451, 559, 583, 667, 671, 803, 869, 2173, 2537, 5063, 5183, 5893, 10201, 13231, 15251, 16171, 18281, 19291, 22523, 22733, 24743, 25283, 26563, 27383, 28583, 28783, 31613, 35653, 37673, 38683, 40567, 45349, 46217

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Example

22523=101*223 is brilliant and 32522=2*16261.

Crossrefs

Cf. A078972, A115683.

Sequence in context: A039566 A032817 A357741 * A257842 A239307 A137253

Adjacent sequences: A115678 A115679 A115680 * A115682 A115683 A115684

Keyword

nonn,base

Author

Giovanni Resta, Jan 31 2006

Status

approved