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A091085 a(n) = mod(A078008(n),10). 0

%I #17 Jan 01 2024 11:27:10

%S 1,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,

%T 2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,

%U 6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6,0,2,2,6

%N a(n) = mod(A078008(n),10).

%C A078008(0), followed by A078008(1), A078008(2), A078008(3), A078008(4) repeating.

%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,1).

%F G.f.: (1+2x^2+2x^3+5x^4)/(1-x^4).

%F E.g.f.: 2cos(x)-sin(x)+3exp(-x)/2+5exp(x)/2-5.

%F a(n) = 2cos(Pi*n/2)-sin(Pi*n/2)+3(-1)^n/2+5/2-5*0^n.

%t LinearRecurrence[{0, 0, 0, 1}, {1, 0, 2, 2, 6}, 105] (* _Georg Fischer_, May 15 2019 *)

%Y Cf. A078008.

%K easy,nonn

%O 0,3

%A _Paul Barry_, Dec 18 2003

%E Terms a(75) ff. corrected by _Georg Fischer_, May 15 2019

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)