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%I #4 Mar 31 2012 19:52:43
%S 0,5,10,15,20,1,6,11,16,21,2,7,12,17,22,3,8,13,18,23,4,9,14,19,24,5,
%T 10,15,20,25,6,11,16,21,26,7,12,17,22,27,8,13,18,23,28,9,14,19,24,29,
%U 10,15,20,25,30,11,16,21,26,31,12,17,22,27,32,13,18,23,28,33,14,19,24,29,34
%N a(n) = 5*mod(n,5) + floor(n/5).
%F a(n) = 5*mod(n,5) + floor(n/5) = 5*A010874(n) + A002266(n)
%F O.g.f.: -x(-5x^3+19x^4-5x^2-5x-5)/[(-1+x)^2*(x^3+x^4+x^2+x+1)] . - _R. J. Mathar_, Mar 07 2008
%e a(0) = 5*mod(0,5) + floor(0/5) = 0
%e a(3) = 5*mod(3,5) + floor(3/5) = 15
%o (Python) a = lambda n: 5*(n%5) + floor(n/5)
%Y Cf. A010874, A002266.
%K nonn,easy
%O 0,2
%A _William A. Tedeschi_, Mar 06 2008
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