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Product of first n palindromic primes plus 1.
1

%I #19 Oct 06 2019 18:17:37

%S 3,7,31,211,2311,233311,30563611,4615105111,835334024911,

%T 159548798757811,49938774011194531,17628387225951669091,

%U 6575388435279972570571,2518373770712229494528311,1830857731307790842522081371,1385959302599997667789215597091

%N Product of first n palindromic primes plus 1.

%C The subsequence of those values which are themselves primes begins: 3, 7, 31, 211, 2311, 6575388435279972570571. - _Jonathan Vos Post_, Feb 09 2011

%t palpQ[n_]:=Module[{idn=IntegerDigits[n]},idn==Reverse[idn]]; #+1&/@FoldList[ Times, 1,Select[Prime[Range[500]],palpQ]] (* _Harvey P. Dale_, Apr 23 2011 *)

%Y Cf. A019515, A030522.

%K nonn,base

%O 1,1

%A _Felice Russo_

%E Corrected and extended by _Patrick De Geest_, Sep 15 2000

%E More terms from _Harvey P. Dale_, Apr 23 2011