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A105299
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Primes formed by concatenation of 8 consecutive triangular numbers.
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0
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OFFSET
| 1,1
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EXAMPLE
| a(1)=105120136153171190210231 because 105120136153171190210231 is the prime formed by concatenation of 8 consecutive triangular numbers i.e. 105,120,136,153,171,190,210 and 231.
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MATHEMATICA
| Select[FromDigits[Flatten[IntegerDigits/@#]]& /@Partition[Accumulate[Range[2000]], 8, 1], PrimeQ] (* From Harvey P. Dale, Mar 20 2011 *)
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CROSSREFS
| Sequence in context: A162033 A082566 A008916 * A094232 A076335 A132185
Adjacent sequences: A105296 A105297 A105298 * A105300 A105301 A105302
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KEYWORD
| base,nonn
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AUTHOR
| Shyam Sunder Gupta (guptass(AT)rediffmail.com), Apr 25 2005
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