A105296 - OEIS

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A105296

Primes formed by concatenation of 5 consecutive triangular numbers.

36101521, 435465496528561, 48514950505051515253, 1522515400155761575315931, 3213132385326403289633153, 3315333411336703393034191, 3631536585368563712837401

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

a(1)=36101521 because 36101521 is the prime formed by concatenation of 5 consecutive triangular numbers i.e. 3,6,10,15 and 21.

CROSSREFS

Sequence in context: A064586 A183593 A183755 * A362964 A254389 A254396

Adjacent sequences: A105293 A105294 A105295 * A105297 A105298 A105299

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta, Apr 25 2005

STATUS

approved