A067943 Let rep(n) be the n-th repunit number, sequence gives values of n such that rep(n)==rep(10) (mod n).

1, 2, 4, 5, 8, 10, 16, 20, 22, 25, 28, 32, 37, 40, 44, 50, 52, 64, 70, 80, 88, 100, 110, 112, 125, 128, 130, 146, 148, 154, 160, 170, 176, 190, 200, 202, 205, 208, 220, 230, 250, 256, 274, 280, 286, 290, 310, 320, 352, 364, 370, 400, 410, 430, 440, 442, 448, 470

Offset

1,2

Links

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

Crossrefs

Cf. A002275.

Sequence in context: A114652 A191288 A181666 * A067937 A003592 A192716

Adjacent sequences: A067940 A067941 A067942 * A067944 A067945 A067946

Keyword

easy,nonn

Author

Benoit Cloitre, Mar 05 2002

Status

approved