id:A105297 - OEIS Search Results

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Primes formed by concatenation of 6 consecutive triangular numbers.

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136101521, 153171190210231253, 231253276300325351, 86190394699010351081, 185281872118915191101930619503, 193061950319701199002010020301, 225782279123005232202343623653, 385033878139060393403962139903 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1)=136101521 because 136101521 is the prime formed by concatenation of 6 consecutive triangular numbers i.e. 1,3,6,10,15 and 21.`
	CROSSREFS	`Sequence in context: A122968 A152960 A034590 this_sequence A034642 A109093 A036744` `Adjacent sequences: A105294 A105295 A105296 this_sequence A105298 A105299 A105300`
	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