A087389 a(1) = 3; a(n+1) is the least prime formed by adding one or more digits to the digit reversal of a(n).

3, 31, 131, 1319, 913103, 3013193, 39131033, 3301319309, 903913103341, 14330131930927, 729039131033419, 9143301319309279, 97290391310334191, 1914330131930927929, 929729039131033419149, 94191433013193092792927

Offset: 1

Author

Amarnath Murthy, Sep 09 2003

Keywords

• base
• nonn

Comments

Note that the digit reversal of a(6) is 3913103, which is already prime, but a(7) is required to have more digits than a(6). - David Wasserman, May 25 2005

Examples

			a(2)= 31, a(3) is the smallest prime beginning with 31 and is 131.
		

Crossrefs

Cf. A087388, A087390, A087391.

Extensions

More terms from David Wasserman, May 25 2005