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A089475 Number of different values taken by the permanent of a real nonsingular (0,1)-matrix of order n. 3
1, 1, 3, 9, 31, 149 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

This sequence was first provided by Jaap Spies.

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

a(4)=9 because the permanents of non-singular 4 X 4 (0,1)-matrices can take the

values 1,2,..,7,9,11.

CROSSREFS

A055165, A089480 give occurrence counts for permanents of non-singular (0, 1)-matrices, A089476 different permanents of singular (0, 1)-matrices.

Sequence in context: A111063 A245116 A255382 * A299549 A099999 A039749

Adjacent sequences:  A089472 A089473 A089474 * A089476 A089477 A089478

KEYWORD

more,nonn

AUTHOR

Hugo Pfoertner, Nov 11 2003

EXTENSIONS

a(6) from Jaap Spies, Nov 12 2003

STATUS

approved

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Last modified November 17 06:06 EST 2019. Contains 329217 sequences. (Running on oeis4.)