-12582912

Appears in sequences

• Expansion of (1 - 2*x -x^4)/(1 - 2*x)^2 in powers of x.at n=25A008936
• a(n)=-4a(n-4).at n=46A137329
• a(0) = 0, a(1) = 1, a(2) = 3, a(3) = 2; thereafter a(n) = -4*a(n-4).at n=46A138377
• a(n) = 2^n*floor((5-2*n)/3).at n=20A171552
• Triangle read by rows: terms T(n,k) of a binomial decomposition of 2^n-1 as Sum(k=0..n)T(n,k).at n=43A244127