A180596 Digital root of 6n.

0, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3, 9, 6, 3

Offset

0,2

Comments

Period of 3. - Robert G. Wilson v, Sep 20 2010

Links

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

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

Formula

G.f.: 3*x*(2 + x + 3*x^2)/(1 - x^3). - Stefano Spezia, Apr 21 2022

a(n) = A010888(A008588(n)). - Michel Marcus, Apr 24 2022

Mathematica

f[n_] := Mod[6 n - 1, 9] + 1; f[0] = 0; Array[f, 105, 0] (* Robert G. Wilson v, Sep 20 2010 *)
PadRight[{0}, 120, {9, 6, 3}] (* Harvey P. Dale, Dec 18 2012 *)

Crossrefs

Cf. A010888, A008588.

Cf. A180592, A180593, A180594, A180595, A180597, A180598, A180599.

Column k = 6 in A353109.

Sequence in context: A135935 A263183 A037905 * A154465 A176533 A214497

Adjacent sequences: A180593 A180594 A180595 * A180597 A180598 A180599

Keyword

easy,nonn,base

Author

Odimar Fabeny, Sep 10 2010

Extensions

More terms from Robert G. Wilson v, Sep 20 2010

Status

approved