id:A033920 - OEIS Search Results

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Largest proper substring of n-th prime that is prime (0 if none).

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0, 0, 0, 0, 0, 3, 7, 0, 3, 2, 3, 7, 0, 3, 7, 5, 5, 0, 7, 7, 7, 7, 3, 0, 7, 0, 3, 7, 0, 13, 7, 31, 37, 13, 0, 5, 7, 3, 67, 73, 79, 0, 19, 19, 97, 19, 11, 23, 7, 29, 23, 23, 41, 5, 7, 3, 2, 71, 7, 2, 83, 29, 7, 31, 31, 31, 31, 37, 47, 3, 53, 59, 67, 73, 79, 83, 89, 97, 0, 0, 41, 2, 43, 43, 43 (list; graph; listen)

	OFFSET	`1,6`
	EXAMPLE	`p(16)=53, largest prime substring is 5, so a(16)=5.`
	CROSSREFS	`See A033274 for the 'no prime substring' sequence.` `Sequence in context: A016617 A118746 A124919 this_sequence A005600 A021031 A086729` `Adjacent sequences: A033917 A033918 A033919 this_sequence A033921 A033922 A033923`
	KEYWORD	`nonn,base`
	AUTHOR	`njas`
	EXTENSIONS	`More terms from Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.`

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Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.

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