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A158076
Number of primality tests required to generate the n-th term of A083771.
1
1, 1, 1, 1, 1, 3, 4, 1, 9, 4, 3, 5, 7, 5, 3, 10, 6, 13, 10, 3, 4, 30, 3, 14, 8, 6, 28, 6, 79, 3, 21, 12, 33, 22, 7, 7, 37, 12, 20, 31, 9, 9, 110, 62, 7, 38, 7, 7, 21, 5, 23, 6, 14, 20, 3, 14, 2, 86, 21, 12, 13, 32, 45, 85, 35, 27, 55, 95, 20, 6, 17, 131, 19, 12, 25, 55, 33, 25, 101, 11, 64
OFFSET
0,6
COMMENTS
The numbers in this sequence are quite low, which suggests that A083771 can be generated quite easily/quickly. It would be interesting to generate further terms to see whether their slow growth continues.
EXAMPLE
The first 5 terms of A083771 are the first 5 primes, so they all require a single primality test, hence the first 5 terms of this sequence are 1. For the 6th term in A083771 we must test 13, 17 until we finally find that 19 works, hence the 6th term of this sequence is 3.
CROSSREFS
Sequence in context: A326503 A105578 A198739 * A010611 A136158 A164948
KEYWORD
nonn
AUTHOR
Dmitry Kamenetsky, Mar 12 2009
STATUS
approved