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A216539
Largest prime p such that there is no n-term arithmetic progression of primes ending with p.
0
2, 37, 557, 100291, 2521081, 198702899, 5082095279
OFFSET
2,1
COMMENTS
For n>=3, the value given is only a conjecture.
EXAMPLE
It is conjectured (A216495) that 37 is the largest prime p with no 3-term arithmetic progression ending with p. This would imply a(3)=37. (7,19,31, for example, is a progression ending with 31.)
CROSSREFS
A216495 conjectures a(3).
A094383 conjectures a(4).
A216497 conjectures a(5).
A216498 conjectures a(6).
A216468 conjectures a(7).
A216590 conjectures a(8).
Cf. A005115.
Sequence in context: A120047 A300926 A337306 * A139122 A123216 A307318
KEYWORD
nonn,hard,more
AUTHOR
Alex Ratushnyak, Sep 12 2012
STATUS
approved