A003563 Least number m such that 7^m == +- 1 (mod 7n + 1).

1, 4, 5, 7, 6, 3, 2, 3, 8, 35, 12, 16, 11, 30, 13, 7, 4, 63, 33, 23, 18, 60, 27, 78, 10, 60, 12, 49, 16, 105, 27, 12, 14, 119, 40, 55, 12, 88, 34, 10, 12, 116, 75, 51, 39, 48, 20, 28, 3, 36, 89, 24, 30, 189, 12, 65, 4, 90, 66, 35, 53, 28, 48, 56, 6, 77, 92, 78

Offset

1,2

Links

Table of n, a(n) for n=1..68.

Crossrefs

Sequence in context: A104140 A378392 A377675 * A389468 A336753 A023833

Adjacent sequences: A003560 A003561 A003562 * A003564 A003565 A003566

Keyword

nonn

Author

N. J. A. Sloane

Status

approved