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A117778 Total number of palindromic primes in base 4 with n digits. +0
1
2, 1, 3, 0, 10, 0, 29, 0, 97, 0, 293, 0 (list; graph; listen)
OFFSET

1,1

COMMENT

Every palindrome with an even number of digits is divisible by 11 (in base 4) and therefore is composite (not prime). Hence there is only one palindromic prime with an even number of digits.

LINKS

Eric Weisstein: Palindromic Prime.

CROSSREFS

Cf. A029972, A117699.

Sequence in context: A127474 A078024 A112469 this_sequence A072127 A144966 A119805

Adjacent sequences: A117775 A117776 A117777 this_sequence A117779 A117780 A117781

KEYWORD

nonn

AUTHOR

Martin Renner (martin.renner(AT)gmx.net), Apr 15 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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