login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Number of different values taken by the absolute value of the permanent of a Hadamard matrix of order 4n.
2

%I #6 Dec 17 2016 10:27:17

%S 1,1,1,1,4,1,27,288

%N Number of different values taken by the absolute value of the permanent of a Hadamard matrix of order 4n.

%Y Cf. A096201, A096204, A096205.

%K nonn,more

%O 0,5

%A _Ian Wanless_, Jul 29 2004