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A047076
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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.
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6
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2, 30203, 133020331, 1713302033171, 12171330203317121, 151217133020331712151, 1815121713302033171215181, 16181512171330203317121518161, 331618151217133020331712151816133, 9333161815121713302033171215181613339, 11933316181512171330203317121518161333911
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| Pickover, Clifford A., A Passion for Mathematics: Numbers, Puzzles, Madness, Religion and the Quest for Reality, John Wiley & Sons, Inc., Hoboken, New Jersey (2005) p. 108.
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LINKS
| C. K. Caldwell, Palindromic Primes
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CROSSREFS
| Cf. A053600.
Sequence in context: A131558 A133857 A153912 * A176721 A030462 A001377
Adjacent sequences: A047073 A047074 A047075 * A047077 A047078 A047079
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KEYWORD
| base,fini,full,nice,nonn
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AUTHOR
| G. L. Honaker, Jr. (honak3r(AT)gmail.com), Jan 26 2000
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