Triangle read by rows: T(n,k) is the coefficient A_k in the transformation Sum_{k=0..n} x^k = Sum_{k=0..n} A_k*(x+3*(-1)^k)^k.
A249268
Triangle read by rows: T(n,k) is the coefficient A_k in the transformation Sum_{k=0..n} x^k = Sum_{k=0..n} A_k*(x+3*(-1)^k)^k.
Terms
- a(0) =1a(1) =4a(2) =1a(3) =-23a(4) =-5a(5) =1a(6) =-320a(7) =-86a(8) =10a(9) =1a(10) =4297a(11) =1102a(12) =-152a(13) =-11a(14) =1a(15) =92020a(16) =24187a(17) =-3122a(18) =-281a(19) =16a(20) =1a(21) =-1922207a(22) =-502151a(23) =66133a(24) =5659a(25) =-389a(26) =-17a(27) =1a(28) =-55746464a(29) =-14601740
External references
- oeis: A249268