Triangle read by rows: T(n,k) = (-2)*T(n-1,k-1) + T(n,k-1) with T(2*m,0) = 0 and T(2*m+1,0) = (-1)^m.
A292495
Triangle read by rows: T(n,k) = (-2)*T(n-1,k-1) + T(n,k-1) with T(2*m,0) = 0 and T(2*m+1,0) = (-1)^m.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =0a(4) =-2a(5) =-4a(6) =-1a(7) =-1a(8) =3a(9) =11a(10) =0a(11) =2a(12) =4a(13) =-2a(14) =-24a(15) =1a(16) =1a(17) =-3a(18) =-11a(19) =-7a(20) =41a(21) =0a(22) =-2a(23) =-4a(24) =2a(25) =24a(26) =38a(27) =-44a(28) =-1a(29) =-1
External references
- oeis: A292495