A294625 Primes of the form prime(n+2)*prime(n+1) - prime(n) +- 1.

31, 71, 73, 137, 211, 311, 419, 421, 647, 877, 1117, 1487, 1979, 2447, 3079, 3547, 4027, 7307, 7309, 12211, 14243, 18911, 18913, 23557, 25439, 28729, 36683, 37831, 46853, 50411, 53129, 55457, 57367, 60251, 67339, 70489, 74797, 89669, 98909, 98911

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Example

7*5 - 3 - 1 = 31
11*7 - 5 - 1 = 71
11*7 - 5 + 1 = 73
13*11 - 7 + 1 = 137

Crossrefs

Cf. A000040, A001359, A006512.

Sequence in context: A086051 A109309 A263242 * A304292 A127191 A003542

Adjacent sequences: A294622 A294623 A294624 * A294626 A294627 A294628

Keyword

nonn

Author

Martin Michael Musatov, Sep 14 2018

Status

approved