110512

Appears in sequences

• a(n) = [x^n] Product_{k>=1} ((1 - x^k)*(1 - x^(2*k)))^n.at n=13A319456
• a(n) = sum of minimal runlengths of all the partitions of n.at n=45A364808
• a(n) = Sum_{d|n} d * binomial(n,d).at n=15A367864