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A080077
Smallest prime p such that between p and the next prime for every k = 1, ..., n there is a number m_k whose smallest prime factor is prime(k).
0
3, 7, 23, 89, 113, 1327, 1327, 1327, 1327, 35677, 35677, 343831, 343831, 4554227, 9550813, 22975847, 22975847, 55761227, 72546143, 72546143, 367876529, 367876529, 367876529, 7966080037, 13276722743, 13600393519, 13600393519
OFFSET
1,1
EXAMPLE
a(1) = 3 since between 3 and 5 we have 4 = 2*2; a(3) = 23 since between 23 and 29 we have 24 = 2*2*2*3, 27 = 3*3*3 and 25 = 5*5; a(5) = 113 since between 113 and 127 we have 114 = 2*3*19, 117 = 3*3*13, 115 = 5*23, 119 = 7*17, 121 = 11*11.
CROSSREFS
Sequence in context: A080355 A366694 A100964 * A096318 A373608 A299404
KEYWORD
nonn
AUTHOR
Klaus Brockhaus, Jan 25 2003
EXTENSIONS
More terms from Bernardo Boncompagni Jul 21 2004
STATUS
approved