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A068445
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Palindromic pseudoprimes (base 2).
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OFFSET
| 1,1
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COMMENTS
| a(6), if it exists, is greater than 2^64. [Charles R Greathouse IV, Jun 29 2011]
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LINKS
| Patrick De Geest, Palindromic Pseudoprimes (base 2)
Carlos Rivera, Puzzle 170
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EXAMPLE
| a(2)= 129921, So the 2nd palindromic pseudoprime(base-2) number is 129921.
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CROSSREFS
| Sequence in context: A122246 A107274 A107276 * A115828 A168529 A161796
Adjacent sequences: A068442 A068443 A068444 * A068446 A068447 A068448
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KEYWORD
| hard,more,nice,base,nonn
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AUTHOR
| Shyam Sunder Gupta (guptass(AT)rediffmail.com), Mar 10 2002; extended Oct 20 2002
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