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A142456
Primes of the form (p(n)-2*n)/5, where p(n)=n-th prime.
1
3, 3, 5, 5, 7, 13, 31, 31, 37, 43, 47, 53, 53, 59, 73, 83, 97, 137, 137, 157, 173, 173, 191, 199, 233, 281, 293, 337, 397, 397, 409, 421, 431, 449, 457, 463, 467, 467, 487, 487, 499, 499, 503, 509, 521, 523, 593, 593, 599
OFFSET
1,1
LINKS
EXAMPLE
If n=13, then (p(13)-2*13)/5=(41-26)/5=3=a(1).
If n=14, then (p(14)-2*14)/5=(43-28)/5=3=a(2).
If n=17, then (p(17)-2*17)/5=(59-34)/5=5=a(3).
If n=18, then (p(18)-2*18)/5=(61-36)/5=5=a(4).
If n=22, then (p(22)-2*22)/5=(79-44)/5=7=a(5).
If n=31, then (p(31)-2*31)/5=(127-62)/5=13=a(6), etc.
MATHEMATICA
Select[Table[(Prime[n]-2n)/5, {n, 1000}], PrimeQ] (* Harvey P. Dale, Nov 24 2012 *)
CROSSREFS
Cf. A000040.
Sequence in context: A092316 A327710 A339101 * A098508 A355572 A051593
KEYWORD
nonn
AUTHOR
EXTENSIONS
Corrected (43 inserted, 87 removed, 157 inserted etc.) by R. J. Mathar, Apr 18 2010
STATUS
approved