A247014 Number of binary centrosymmetric matrices of size n X n.

1, 2, 4, 32, 256, 8192, 262144, 33554432, 4294967296, 2199023255552, 1125899906842624, 2305843009213693952, 4722366482869645213696, 38685626227668133590597632, 316912650057057350374175801344, 10384593717069655257060992658440192

Offset

0,2

References

T. Muir, A Treatise on the Theory of Determinants, Dover, 1960, pages 18-19.

Links

Alois P. Heinz, Table of n, a(n) for n = 0..80

Eric Weisstein's World of Mathematics, Centrosymmetric Matrix

Wikipedia, Centrosymmetric matrix

Formula

a(n) = 2^A000982(n).

Crossrefs

Cf. A000982, A006125.

Sequence in context: A122693 A019060 A366365 * A085055 A075070 A144937

Adjacent sequences: A247011 A247012 A247013 * A247015 A247016 A247017

Keyword

nonn

Author

Lior Manor, Sep 09 2014

Status

approved