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A089339 Number of primes beginning with n and of the form n concatenated with p where p takes all the prime values less than n. 1
0, 0, 0, 1, 1, 0, 1, 1, 1, 2, 1, 1, 1, 0, 2, 3, 1, 1, 3, 2, 2, 3, 2, 3, 1, 2, 4, 2, 2, 4, 3, 2, 6, 2, 4, 5, 2, 2, 7, 2, 2, 6, 2, 3, 5, 4, 2, 4, 4, 3, 3, 3, 2, 8, 3, 5, 6, 3, 3, 7, 5, 4, 9, 2, 4, 5, 5, 4, 6, 3, 2, 9, 2, 4, 10, 2, 6, 8, 3, 4, 8, 7, 4, 8, 6, 5, 11, 7, 4, 8, 3, 2, 8, 9, 3, 10, 4, 7, 7, 4, 4, 11, 5 (list; graph; refs; listen; history; internal format)
OFFSET

1,10

COMMENTS

Conjecture: There are finitely many zeros in this sequence. What is the largest value of n such that a(n) = 0? Perhaps n = 14.

EXAMPLE

a(10) = 2 and 103 and 107 are the associated primes.

CROSSREFS

Cf. A089340.

Sequence in context: A200650 A117479 A118404 * A127284 A120691 A111941

Adjacent sequences:  A089336 A089337 A089338 * A089340 A089341 A089342

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 04 2003

EXTENSIONS

Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 07 2003

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.