A triangle of coefficients Pseudo-Hadamard matrices as integer characteristic polynomials (the code and initial values are very long, but the basic recurrence is the Hadamard matrix self-similarity).

A158239

A triangle of coefficients Pseudo-Hadamard matrices as integer characteristic polynomials (the code and initial values are very long, but the basic recurrence is the Hadamard matrix self-similarity).

Terms

    a(0) =1a(1) =1a(2) =-1a(3) =-2a(4) =0a(5) =1a(6) =-4a(7) =2a(8) =2a(9) =-1a(10) =16a(11) =0a(12) =-8a(13) =0a(14) =1a(15) =32a(16) =-16a(17) =-16a(18) =8a(19) =2a(20) =-1a(21) =-128a(22) =0a(23) =80a(24) =0a(25) =-16a(26) =0a(27) =1a(28) =-64a(29) =32

External references