A105962 Numbers k such that prime(k^2) - k is prime.

2, 30, 38, 44, 74, 82, 88, 96, 106, 114, 132, 138, 140, 160, 162, 184, 230, 276, 278, 280, 298, 304, 316, 318, 332, 342, 414, 420, 428, 450, 470, 480, 540, 580, 584, 600, 638, 668, 672, 678, 680, 684, 728, 750, 754, 766, 768, 788, 798, 848, 858, 860, 902, 930

Offset

1,1

Links

Jinyuan Wang, Table of n, a(n) for n = 1..500

Mathematica

Select[Range[1000], PrimeQ[Prime[ #^2] - # ] &]

Prog

(PARI) is(k) = isprime(prime(k^2)-k); \\ Jinyuan Wang, Apr 10 2020

Crossrefs

Cf. A064269 (prime(k) - k is prime), A130135 (prime(k^3) - k is prime).

Sequence in context: A145290 A343930 A127026 * A113695 A098827 A280380

Adjacent sequences: A105959 A105960 A105961 * A105963 A105964 A105965

Keyword

nonn

Author

Tanya Khovanova, Dec 26 2006

Status

approved