id:A117773 - OEIS Search Results

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Total number of palindromic primes in base 2 with n digits.

+0
1

0, 1, 2, 0, 2, 0, 3, 0, 3, 0, 7, 0, 12, 0, 23, 0, 40, 0, 94, 0, 142, 0 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`Every palindrome with an even number of digits is divisible by 11 (in base 2) 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. A016041, A117697, A095741.` `Sequence in context: A090330 A132747 A053399 this_sequence A025805 A029192 A128619` `Adjacent sequences: A117770 A117771 A117772 this_sequence A117774 A117775 A117776`
	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.