A249419 Least prime p>=prime(n) such that p + 2 == 0 (mod prime(n)).

2, 7, 13, 19, 31, 37, 83, 131, 67, 317, 277, 109, 367, 127, 139, 157, 293, 181, 199, 211, 509, 709, 911, 443, 677, 503, 307, 2459, 761, 337, 379, 653, 409, 971, 743, 3169, 1097, 487, 499, 863, 1609, 541, 571, 577, 983, 1789, 631, 1559, 6581, 1601, 1163, 1193, 3613, 751, 769, 787, 2957

Offset

1,1

Links

Zak Seidov, Table of n, a(n) for n = 1..1000

Prog

(PARI) a(n) = {pn = prime(n); forprime(p = pn, , if (((p+2) % pn) == 0, return (p)); ); } \\ Michel Marcus, Oct 29 2014

Crossrefs

Sequence in context: A156012 A106011 A045375 * A331544 A237499 A231476

Adjacent sequences: A249416 A249417 A249418 * A249420 A249421 A249422

Keyword

nonn

Author

Zak Seidov, Oct 28 2014

Status

approved