OFFSET
0,2
LINKS
Minfeng Wang, C++ program to calculate a(2) .. a(5)
Eric Weisstein's World of Mathematics, Hadamard's Maximum Determinant Problem
Eric Weisstein's World of Mathematics, (-1, 1)-Matrix
FORMULA
CROSSREFS
KEYWORD
nonn,more,hard
AUTHOR
Eric W. Weisstein, Apr 19 2011
EXTENSIONS
Offset changed to 0 by Hugo Pfoertner, Jan 23 2023
a(5)-a(9) from Minfeng Wang, Jan 22 2023
STATUS
approved