0,3

(1/6) [6Fib(n+8) - (n^3+12n^2+59n+126) ]. G.f.: x/[(1-x)^4(1-x-x^2)].

a(n)=Sum_{k=1..n}{C(n-k+4,k+3)}, with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Apr 16 2008

Cf. A000045.

Right-hand column 8 of triangle A011794.

Sequence in context: A081997 A078449 A014161 this_sequence A014171 A014175 A097810

Adjacent sequences: A014163 A014164 A014165 this_sequence A014167 A014168 A014169

nonn

njas