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A122606 n^(n+1) mod 7. 0
0, 1, 1, 4, 2, 1, 6, 0, 1, 2, 5, 1, 5, 1, 0, 1, 4, 1, 4, 4, 6, 0, 1, 1, 3, 2, 6, 1, 0, 1, 2, 2, 1, 2, 6, 0, 1, 4, 6, 4, 3, 1, 0, 1, 1, 4, 2, 1, 6, 0, 1, 2, 5, 1, 5, 1, 0, 1, 4, 1, 4, 4, 6, 0, 1, 1, 3, 2, 6, 1, 0, 1, 2, 2, 1, 2, 6, 0, 1, 4, 6, 4, 3, 1, 0, 1, 1, 4, 2, 1, 6, 0, 1, 2, 5, 1, 5, 1, 0, 1, 4, 1, 4, 4, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..104.

FORMULA

a(n) = n^(n+1) mod 7 = A007778(n) mod 7.

Periodic with cycle consisting of first 42 terms: {0,1,1,4,2,1,6,0,1,2,5,1,5,1,0,1,4,1,4,4,6,0,1,1,3,2,6,1,0,1,2,2,1,2,6,0,1,4,6,4,3,1}.

MATHEMATICA

Table[PowerMod[n, n+1, 7], {n, 0, 120}] (* Harvey P. Dale, May 24 2012 *)

CROSSREFS

Cf. A053879, A070472, A007778.

Sequence in context: A228132 A133455 A146321 * A277744 A119953 A010645

Adjacent sequences:  A122603 A122604 A122605 * A122607 A122608 A122609

KEYWORD

nonn

AUTHOR

Zak Seidov, Sep 24 2006, Sep 25 2006

STATUS

approved

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Last modified October 16 21:10 EDT 2019. Contains 328103 sequences. (Running on oeis4.)