A triangle sequence of permutation Hadamard {1,-1) matrix polynomials: M(d)=Table[If[ m == n, d!/n!, 0], {n, d}, {m, d}]; m(n)=M(2^n)*Hadamard(2^n).

A158452

A triangle sequence of permutation Hadamard {1,-1) matrix polynomials: M(d)=Table[If[ m == n, d!/n!, 0], {n, d}, {m, d}]; m(n)=M(2^n)*Hadamard(2^n).

Terms

    a(0) =1a(1) =2a(2) =2a(3) =1a(4) =-1a(5) =24a(6) =24a(7) =24a(8) =24a(9) =12a(10) =-12a(11) =12a(12) =-12a(13) =4a(14) =-4a(15) =-4a(16) =4a(17) =1a(18) =1a(19) =-1a(20) =-1a(21) =40320a(22) =40320a(23) =40320a(24) =40320a(25) =40320a(26) =40320a(27) =40320a(28) =40320a(29) =20160

External references