A067938 Let rep(n) be the n-th repunit number, sequence gives values of n such that rep(n)==rep(5) (mod n).

1, 2, 4, 5, 8, 10, 11, 16, 20, 25, 32, 35, 40, 50, 55, 65, 74, 77, 80, 85, 95, 100, 101, 115, 125, 143, 145, 155, 160, 185, 200, 205, 215, 235, 250, 265, 275, 295, 296, 305, 335, 355, 365, 395, 400, 407, 410, 415, 445, 455, 485, 500, 505, 515, 535, 545, 565, 620

Offset

1,2

Links

Table of n, a(n) for n=1..58.

Crossrefs

Cf. A002275.

Sequence in context: A191986 A018699 A073628 * A306073 A018457 A046809

Adjacent sequences: A067935 A067936 A067937 * A067939 A067940 A067941

Keyword

easy,nonn

Author

Benoit Cloitre, Mar 05 2002

Status

approved