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A067939
Let rep(n) be the n-th repunit number; sequence gives values of n such that rep(n) == rep(6) (mod n).
0
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 22, 24, 25, 30, 32, 40, 41, 42, 44, 48, 50, 60, 64, 66, 75, 78, 80, 84, 88, 96, 100, 102, 110, 111, 114, 120, 125, 132, 138, 150, 156, 160, 168, 174, 176, 186, 192, 200, 202, 210, 220, 222, 240, 246, 250, 258, 264, 271, 282
OFFSET
1,2
CROSSREFS
Cf. A002275.
Sequence in context: A064481 A336505 A303704 * A067784 A324107 A018744
KEYWORD
easy,nonn
AUTHOR
Benoit Cloitre, Mar 05 2002
STATUS
approved