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A158001 Period 6: repeat [9, 10, 9, 4, 4, 1]. 1
9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1, 9, 10, 9, 4, 4, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
From Wesley Ivan Hurt, Jun 18 2016: (Start)
G.f.: x*(9+10*x+9*x^2+4*x^3+4*x^4+x^5)/(1-x^6).
a(n) = a(n-6) for n > 6.
a(n) = (37 - 7*cos(n*Pi) - 17*cos(n*Pi/3) - 7*cos(2*n*Pi/3) + 11*sqrt(3)*sin(n*Pi/3) - sqrt(3)*sin(2*n*Pi/3))/6. (End)
MAPLE
A158001:=n->[9, 10, 9, 4, 4, 1][(n mod 6)+1]: seq(A158001(n), n=0..100); # Wesley Ivan Hurt, Jun 18 2016
MATHEMATICA
Flatten[Table[{9, 10, 9, 4, 4, 1}, {20}]] (* Wesley Ivan Hurt, Jun 18 2016 *)
PadRight[{}, 100, {9, 10, 9, 4, 4, 1}] (* Vincenzo Librandi, Jun 19 2016 *)
PROG
(Magma) &cat[[9, 10, 9, 4, 4, 1]^^20]; // Wesley Ivan Hurt, Jun 18 2016
CROSSREFS
Sequence in context: A107434 A334681 A020508 * A157763 A010735 A063543
KEYWORD
nonn,easy
AUTHOR
Paul Curtz, Mar 11 2009
STATUS
approved

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Last modified May 29 18:36 EDT 2024. Contains 372952 sequences. (Running on oeis4.)