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A047076 a(n+1) is the smallest palindromic prime containing exactly 2 more digits on each end than the previous term, with a(n) as a central substring. +0
6
2, 30203, 133020331, 1713302033171, 12171330203317121, 151217133020331712151, 1815121713302033171215181, 16181512171330203317121518161, 331618151217133020331712151816133, 9333161815121713302033171215181613339, 11933316181512171330203317121518161333911 (list; graph; listen)
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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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