1,4

a(n) = floor( A000914(n-1)/A000217(n)). Conjecture: g.f.: x^3*(-1-x-x^5-2*x^7+x^4+x^8)/((x^2+1) * (1+x+x^2) * (x^4-x^2+1) * (x-1)^3). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 15 2009]

Sequence in context: A046992 A001463 A145197 this_sequence A078126 A024206 A159325

Adjacent sequences: A024166 A024167 A024168 this_sequence A024170 A024171 A024172

nonn

Clark Kimberling (ck6(AT)evansville.edu)