Triangle of coefficients in expansion of (4 + 5*x)^n.

Terms

a(0) =1a(1) =4a(2) =5a(3) =16a(4) =40a(5) =25a(6) =64a(7) =240a(8) =300a(9) =125a(10) =256a(11) =1280a(12) =2400a(13) =2000a(14) =625a(15) =1024a(16) =6400a(17) =16000a(18) =20000a(19) =12500a(20) =3125a(21) =4096a(22) =30720a(23) =96000a(24) =160000a(25) =150000a(26) =75000a(27) =15625a(28) =16384a(29) =143360