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A088227

Solutions x to x^n == 7 mod 13.

2, 6, 7, 11, 15, 19, 20, 24, 28, 32, 33, 37, 41, 45, 46, 50, 54, 58, 59, 63, 67, 71, 72, 76, 80, 84, 85, 89, 93, 97, 98, 102, 106, 110, 111, 115, 119, 123, 124, 128, 132, 136, 137, 141, 145, 149, 150, 154, 158, 162, 163, 167, 171, 175, 176, 180, 184, 188, 189, 193

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OFFSET

1,1

REFERENCES

E. Grosswald, Topics From The Theory of Numbers, 1966, pp. 62-63.

LINKS

Table of n, a(n) for n=1..60.

Index entries for linear recurrences with constant coefficients, signature (1,0,0,1,-1).

FORMULA

G.f.: x*(2 + 4*x + x^2 + 4*x^3 + 2*x^4)/(1 - x - x^4 + x^5). - Philippe Deléham, Dec 01 2016

EXAMPLE

2^11 - 7 = 2041 = 11*157. Thus 2 is in the sequence.