Triangle T, read by rows, where all columns of T are different and yet all columns of the matrix square T^2 (A118407) are equal; also equals the matrix inverse of triangle A118400.
A118404
Triangle T, read by rows, where all columns of T are different and yet all columns of the matrix square T^2 (A118407) are equal; also equals the matrix inverse of triangle A118400.
Terms
- a(0) =1a(1) =1a(2) =-1a(3) =-1a(4) =0a(5) =1a(6) =-1a(7) =1a(8) =-1a(9) =-1a(10) =1a(11) =0a(12) =0a(13) =2a(14) =1a(15) =1a(16) =-1a(17) =0a(18) =-2a(19) =-3a(20) =-1a(21) =-1a(22) =0a(23) =1a(24) =2a(25) =5a(26) =4a(27) =1a(28) =-1a(29) =1
External references
- oeis: A118404