0,4

Table of n, a(n) for n=0..75.

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

G.f.: (1+x^2+2x^3+2x^4+3x^5+2x^6+3x^7+2x^8+x^9+x^10)/(1-x^6)^2; a(n)=sum{k=0..n, -mu(k mod 6)}.

Cf. A008611, A106249, A106250.

Sequence in context: A063712 A185977 A204006 * A134478 A051162 A122872

Adjacent sequences: A106248 A106249 A106250 * A106252 A106253 A106254

easy,nonn

Paul Barry, Apr 27 2005

approved