Keywords: Walsh 8 * Gould's-Morse.svg Walsh matrix of order 8<br> <br> <math> 1 -2 -2 4 -2 4 4 -8 T</math><br> <br> <math> -1 3 3 -9 3 -9 -9 27 T</math><br> Positive numbers are green negatives red 1 -2 -2 4 -2 4 4 -8 is the beginning of Gould's sequence A001316 <br> with the minus signs distributed like the ones in Thue “Morse sequence A01006 <br> Gould's-Morse sequence -1 3 3 -9 3 -9 -9 27 is the beginning of A048883 <br> with the minus signs distributed like the zeros in Thue “Morse sequence own mate2code Walsh matrix of order 8 Matrix multiplication Integer sequence Thue-Morse sequence |