id:A105291 - OEIS Search Results

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Smallest prime formed by concatenation of n consecutive triangular numbers, 0 if no such prime exists.

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3, 13, 210231253, 171190210231, 36101521, 136101521, 1596165317111770183018911953, 105120136153171190210231, 0, 17020172051739117578177661795518145183361852818721 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(3)=210231253 because 210231253 is the smallest prime formed by concatenation of 3 consecutive triangular numbers i.e. 210,231 and 253.`
	CROSSREFS	`Sequence in context: A112856 A007523 A092830 this_sequence A048756 A157323 A016549` `Adjacent sequences: A105288 A105289 A105290 this_sequence A105292 A105293 A105294`
	KEYWORD	`base,nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Apr 25 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research