82380323025domain: NAppears in sequencesa(n) = (4*n+7)(!^4)/7(!^4), related to A034176(n+1) ((4*n+3)(!^4) quartic, or 4-factorials).at n=8A051619a(n) = Product_{k=0..n-1} (n+4*k+3).at n=8A384259