A127184 Number of distinct reducible characteristic polynomials of n X n real robust {0,1}-matrices.

0, 1, 6, 68, 1893

Offset

1,3

Links

Table of n, a(n) for n=1..5.

Formula

a(n)=A127182(n)-A127183(n)

Crossrefs

Cf. A125587, A125593, A127182, A127183, A127186.

Sequence in context: A363396 A274722 A347927 * A333795 A113692 A003362

Adjacent sequences: A127181 A127182 A127183 * A127185 A127186 A127187

Keyword

nonn

Author

Artur Jasinski and Peter Pein (petsie(AT)dordos.net), Jan 07 2007

Status

approved