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A127184 Number of distinct reducible characteristic polynomials of n X n real robust {0,1}-matrices. 2
0, 1, 6, 68, 1893 (list; graph; refs; listen; history; text; internal format)
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: A140606 A014505 A274722 * A113692 A003362 A197170

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

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Last modified February 24 11:36 EST 2020. Contains 332209 sequences. (Running on oeis4.)