A107580 Numbers n such that (n + prime(n)) and (n+1 + prime(n+1)) are divisible by 5.

27, 62, 63, 78, 88, 93, 112, 117, 122, 131, 136, 137, 146, 147, 162, 163, 226, 283, 287, 348, 371, 382, 391, 401, 402, 447, 483, 526, 527, 532, 533, 547, 552, 612, 626, 641, 642, 678, 687, 688, 718, 727, 766, 806, 877, 888, 986, 987, 992, 996, 1002, 1011, 1022

Offset

1,1

Comments

For some values of n, e.g., 62, 132, 146, 162, also (n+2 + prime(n+2)) is divisible by 5.

Links

Table of n, a(n) for n=1..53.

Mathematica

Select[Range[5000], Mod[Prime[ # ]+#, 5]+Mod[Prime[ #+1]+#+1, 5]==0&]

Crossrefs

Sequence in context: A235164 A157500 A180574 * A138610 A128530 A373763

Adjacent sequences: A107577 A107578 A107579 * A107581 A107582 A107583

Keyword

easy,nonn

Author

Zak Seidov, Jun 10 2005

Status

approved