159250domain: NAppears in sequencesa(n) = T(2*n+2,n), array T as in A055216.at n=10A055218Number of domino tilings of a 5-pillow of order n.at n=8A112836Number of words of length n+1 created with the letters a,b,c with more c's than b's and more b's than a's.at n=12A115752a(n) = 25*(n + 1)*(4*n + 3)*(5*n + 4)/3.at n=9A300254