A074070 Number of Paley classes of Hadamard matrices of order 4n.

2, 3, 2, 3, 2, 3, 2, 4, 1, 2, 1, 4, 1, 2, 2, 4, 1, 2, 1, 3, 2, 1, 0, 4, 1, 2, 2, 2, 0, 2, 1, 5, 1, 1, 1, 2, 1, 2, 0, 3, 2, 3, 0, 1, 2, 0, 0, 5, 1, 2, 1, 2, 1, 2, 1, 3, 2, 0, 0, 3, 2, 1, 2, 5, 0, 2, 0, 2, 1, 1, 1, 2, 0, 1, 1, 2, 1, 1, 1, 3, 0, 2, 1, 3, 1, 1, 2, 1, 0, 3, 1, 1, 0, 0, 1, 6, 1, 1, 1, 2, 0, 1

Offset

1,1

Comments

Positions of zeros (multiplied by 4) gives A046116.

Links

Table of n, a(n) for n=1..102.

Eric Weisstein's World of Mathematics, Hadamard Matrix

Crossrefs

Cf. A046116.

Sequence in context: A342866 A023524 A068639 * A304097 A251101 A065067

Adjacent sequences: A074067 A074068 A074069 * A074071 A074072 A074073

Keyword

nonn,changed

Author

Eric W. Weisstein, Aug 18 2002

Status

approved