A003565 Least number m such that 9^m == +- 1 (mod 9n + 1).

1, 9, 3, 9, 11, 10, 8, 3, 2, 3, 10, 27, 29, 63, 8, 7, 15, 81, 21, 45, 18, 99, 6, 15, 28, 46, 5, 55, 65, 15, 6, 68, 37, 17, 39, 30, 83, 147, 20, 171, 18, 189, 24, 99, 42, 82, 26, 27, 24, 20, 22, 33, 119, 243, 30, 25, 64, 29, 9, 135, 10, 21, 35, 12, 73, 24, 25

Offset

1,2

Links

Table of n, a(n) for n=1..67.

Crossrefs

Sequence in context: A019879 A334376 A361062 * A238105 A363872 A166203

Adjacent sequences: A003562 A003563 A003564 * A003566 A003567 A003568

Keyword

nonn

Author

N. J. A. Sloane

Status

approved