1,1

a(2)=ceiling{(1*2^0+1*2^1+2*2^2+4*2^3)/(1*2^0+2*2^1+1*2^2)}=floor(43/9)=floor(4.77778)=5

Cf. A086790.

Sequence in context: A108165 A063957 A047385 this_sequence A086343 A056549 A034806

Adjacent sequences: A086811 A086812 A086813 this_sequence A086815 A086816 A086817

easy,nonn

Wang Dan (wangdan01(AT)lycos.com), Aug 06 2003