id:A117777 - OEIS Search Results

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Total number of palindromic primes in base 4 below 4^n.

+0
1

2, 3, 6, 6, 16, 16, 45, 45, 142, 142, 435, 435 (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: A129650 A007894 A102625 this_sequence A049297 A056391 A056430` `Adjacent sequences: A117774 A117775 A117776 this_sequence A117778 A117779 A117780`
	KEYWORD	`nonn`
	AUTHOR	`Martin Renner (martin.renner(AT)gmx.net), Apr 15 2006`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.