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A097440 Least k such that k*P(n)#/2 - 2 and k*P(n)#/2 + 4 are consecutive primes P(i)= i-th prime, P(i)# = i-th primorial. 0
25, 11, 5, 7, 27, 17, 1, 53, 105, 175, 39, 15, 15, 25, 149, 35, 117, 119, 317, 65, 123, 43, 187, 173, 119, 1397, 439, 313, 17, 429, 403, 675, 395, 1491, 135, 1427, 801, 87, 169, 481, 753, 319, 133, 73, 133, 89, 275, 1155, 1665, 157, 217, 3121, 279, 2485, 305 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

25*2/2 = 25, 23 and 29 consecutive primes so for n=1 k=25

11*2*3/2 = 33, 31 and 37 consecutive primes so for n=2 k=11

CROSSREFS

Sequence in context: A181763 A171638 A040604 * A040603 A033345 A093539

Adjacent sequences:  A097437 A097438 A097439 * A097441 A097442 A097443

KEYWORD

nonn

AUTHOR

Pierre CAMI (pierre-cami(AT)bbox.fr), Aug 22 2004

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.