Triangle of coefficients in expansion of (1+2*x)^n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =4a(5) =4a(6) =1a(7) =6a(8) =12a(9) =8a(10) =1a(11) =8a(12) =24a(13) =32a(14) =16a(15) =1a(16) =10a(17) =40a(18) =80a(19) =80a(20) =32a(21) =1a(22) =12a(23) =60a(24) =160a(25) =240a(26) =192a(27) =64a(28) =1a(29) =14