717760

Appears in sequences

• a(n) = n!*[x^n] sinh(x/(1 - x))/(1 - x).at n=8A331326
• Expansion of Sum_{n>=0} Product_{k=0..n} (x^k*(1+x)^(n-k) + x^(n-k)*(1+x)^k).at n=13A370241