-4762

Appears in sequences

• a(n) = 2^n * Sum_{k=0..n} k^p*q^k, where p=2, q=-1/2.at n=16A232603
• G.f.: Sum_{n>=0} (x^(2*n-1) + 1)^n * x^n / (1 + x^(2*n+1))^(n+1), an even function.at n=39A326602