A095958 - OEIS

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A095958

Twin prime pairs concatenated in decimal representation.

35, 57, 1113, 1719, 2931, 4143, 5961, 7173, 101103, 107109, 137139, 149151, 179181, 191193, 197199, 227229, 239241, 269271, 281283, 311313, 347349, 419421, 431433, 461463, 521523, 569571, 599601, 617619, 641643, 659661 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`a(n) mod 3 = 0 for n>1, proof: A007953(a(n)) = 2*A007953(A001359(n)+1) and A007953(A001359(n)) mod 3 = 2 for n>1, therefore A007953(a(n)) mod 3 = 0.`
	EXAMPLE	`29 = A001359(5), 29 + 2 = 31 = A006512(5): a(5) = 2931.`
	CROSSREFS	`Cf. A045533, A001359, A006512.` `Sequence in context: A048033 A078819 A189554 * A026064 A092256 A108172` `Adjacent sequences: A095955 A095956 A095957 * A095959 A095960 A095961`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 14 2004`

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.