id:A086101 - OEIS Search Results

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Concatenation of the last digit of p(n) and of the first digit of prine(n+1) gives prime; values of such n in the sequence.

+0
2

1, 4, 5, 6, 7, 11, 20, 21, 25, 26, 27, 28, 30, 31, 32, 33, 36, 37, 38, 39, 40, 42, 43, 44, 45, 63, 64, 66, 67, 68, 69, 73, 125, 126, 127, 128, 130, 131, 132, 133, 135, 136, 137, 154, 155, 156, 159, 160, 161, 163, 164, 165, 167, 168, 170, 172, 173, 174, 177, 178, 179 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(7)=20 because prime{20)=71, prime{21)=73, and 17 is prime`
	CROSSREFS	`Sequence in context: A047312 A004714 A014098 this_sequence A131260 A047566 A037355` `Adjacent sequences: A086098 A086099 A086100 this_sequence A086102 A086103 A086104`
	KEYWORD	`easy,nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Jul 09 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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