3990767616domain: NAppears in sequencesa(n) = Sum_{k=0..2n} (k+1) * A026519(n, k).at n=21A027266a(n) = Sum_{k=0..2n} (k+1) * A026552(n, k).at n=21A027276a(n) = n*6^n.at n=11A0362926th binomial transform of (0,0,1,0,0,0, ...).at n=12A081136