20603520

Appears in sequences

• a(n) = (n-1)!*(2^n-1) for n>=1, a(0)=0.at n=9A029767
• Matrix product of unsigned Lah-triangle |A008297(n,k)| and unsigned Stirling1-triangle |A008275(n,k)|.at n=36A079638
• Array read by ascending antidiagonals. A(n, k) = k! * [x^k] log((1 - x) / (1 - 2*x)) / (1 - x)^n, for 0 <= k <= n.at n=54A355257
• Triangle read by rows. Row k are the coefficients of the polynomials (sorted by ascending powers) which interpolate the points (n, A355257(n, k+1)) for n = 0..k.at n=36A355259