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A069503 a(1) = 2; a(n) = smallest palindromic prime of the form k*a(n-1) + 1. 1

%I

%S 2,3,7,757,9927299,359243616342953

%N a(1) = 2; a(n) = smallest palindromic prime of the form k*a(n-1) + 1.

%C a(1) = 2, a(n+1) = smallest palindromic prime == 1 (mod a(n)).

%C Multiplier k for a(7) is larger than 1000000000. - _Patrick De Geest_, Jun 10 2003

%C Multiplier k for a(7), if it exists, is larger than 10^10. - _Daniel Starodubtsev_, Jan 18 2020

%Y Cf. A002385.

%K base,nonn,more

%O 1,1

%A _Amarnath Murthy_, Mar 30 2002

%E More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 31 2003

%E a(6) from _Patrick De Geest_, Jun 10 2003

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Last modified February 20 04:46 EST 2020. Contains 332063 sequences. (Running on oeis4.)