A083149 a(1) = 3, a(n) = smallest nontrivial palindromic multiple of a(n-1). a(n) is not equal to a(n-1) or a concatenation of a(n-1) with itself.

3, 6, 222, 444, 888, 21312, 42624, 468864, 40322304, 80644608, 802494494208, 213525880454088525312, 213525880454088738837880454088525312

Offset: 1

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 25 2003

Keywords

• nonn
• base
• more

Comments

Multiplier for a(12) is larger than 2000000000.

Links

• P. De Geest, WONplate 36

Crossrefs

Cf. A083150, A068665, A083147, A083151, A083153, A083155.

Extensions

More terms from Patrick De Geest, Jun 05 2003

a(13) from Giovanni Resta, Sep 22 2019