0,2

a(n) = Sum_{k=0..n} fibonacci(k(n-k) + 1).

(PARI) a(n)=sum(k=0, n, fibonacci(k*(n-k)+1))

Cf. A135966.

Sequence in context: A002877 A065845 A137273 this_sequence A134737 A030733 A122839

Adjacent sequences: A135964 A135965 A135966 this_sequence A135968 A135969 A135970

nonn

Paul D. Hanna (pauldhanna(AT)juno.com), Dec 11 2007