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A105297 Primes formed by concatenation of 6 consecutive triangular numbers. 0
136101521, 153171190210231253, 231253276300325351, 86190394699010351081, 185281872118915191101930619503, 193061950319701199002010020301, 225782279123005232202343623653, 385033878139060393403962139903 (list; graph; refs; listen; history; internal format)
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: A152960 A034590 A185888 * A203505 A034642 A109093

Adjacent sequences:  A105294 A105295 A105296 * A105298 A105299 A105300

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Apr 25 2005

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Last modified February 17 04:43 EST 2012. Contains 205981 sequences.