A036297 Number of Hadamard matrices of order n.

1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 5, 0, 0, 0, 3, 0, 0, 0, 60, 0, 0, 0, 487, 0, 0, 0, 13710027, 0, 0, 0

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• nice
• hard
• more

References

• See A007299 for references.

Links

• See A007299 for links.
• Index entries for sequences related to Hadamard matrices
• Index entries for sequences related to maximal determinants

Crossrefs

A007299 is the main entry for this sequence. Cf. A003432.

Extensions

a(32) from the H. Kharaghani and B. Tayfeh-Rezaie paper. - N. J. A. Sloane, Feb 11 2012