A109467 4 X 4 analog of A094943.

1, 26, 256, 2472, 25056, 250016, 2499456, 25002112, 249995776, 2500000256, 25000032256, 249999869952, 2500000260096, 25000000004096, 249999997894656, 2500000008404992, 24999999983190016, 250000000000065536, 2500000000134086656, 24999999999463391232

Offset: 0

Author

N. J. A. Sloane, based on email from Alec Mihailovs, Aug 28 2005

Keywords

• nonn

Formula

a(n+4)=4*a(n+3)+44*a(n+2)+144*a(n+1)+160*a(n), a(0) = 1, a(1) = 26, a(2) = 256, a(3) = 2472.

G.f.: (1+22*x+108*x^2+160*x^3)/(1-4*x-44*x^2-144*x^3-160*x^4).