A083995 - OEIS

A083995

a(1) = 9, then the smallest number such that the forward as well as the reverse n-th partial concatenation is a prime for n>1. (Reverse concatenation is taken term-wise and not digit-wise).

%I #4 Dec 05 2013 19:56:16

%S 9,7,1,27,3,63,191,297,207,19,3107,147,159,5679,4579,2739,2223,8517,

%T 8649,2531,1699,3969,797,12883,11013,4811,15657,2719,2231,15391,32711,

%U 35931,6861,3927,87,6057,2083,19943,13389,35679,1653,37519,13347,21567

%N a(1) = 9, then the smallest number such that the forward as well as the reverse n-th partial concatenation is a prime for n>1. (Reverse concatenation is taken term-wise and not digit-wise).

%Y Cf. A083992, A083993, A083994.

%K base,nonn

%O 0,1

%A _Amarnath Murthy_, May 23 2003

%E More terms from _Ray Chandler_, Aug 03 2003