245746domain: NAppears in sequencesa(n) = (n+1)*2^n - n.at n=14A048493Number of 4 X n 0-1 matrices avoiding simultaneously the right angled numbered polyomino patterns (ranpp) (00;1), (10;0) and (11;0).at n=14A099003a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n*k,n-k).at n=10A361836