-103088

Appears in sequences

• Imaginary parts of terms (1,1), (2,2) of matrix [1,(1+I); 1,1]^n.at n=16A138803
• Triangle read by rows: T(n,k) is the coefficient A_k in the transformation Sum_{k=0..n} (k+1)*x^k = Sum_{k=0..n} A_k*(x+3)^k.at n=39A246798