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a(1) = 8; a(n) = smallest palindromic number of the form k*a(n-1) + 1 with k > 1.
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%I #14 Oct 26 2019 02:09:49

%S 8,33,232,929,18581,29933992,108309414903801,

%T 5352871641494664941461782535

%N a(1) = 8; a(n) = smallest palindromic number of the form k*a(n-1) + 1 with k > 1.

%C Multiplier k for a(8) is larger than 1000000000. - _Patrick De Geest_

%C The multipliers (k) are 4, 7, 4, 20, 1611, 3618275, 49422034513334. - _Lars Blomberg_, Sep 24 2011

%Y Cf. A069505, A069506, A069507, A069508, A069510.

%K nonn,base,more

%O 1,1

%A _Amarnath Murthy_, Mar 30 2002

%E a(6) from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 07 2003

%E a(7) from _Patrick De Geest_, Jun 11 2003

%E a(8) added and offset changed to 1 by _Lars Blomberg_, Sep 24 2011