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A088217 Number of distinct values that can be assumed by the determinant of an n X n matrix whose entries are all permutations of the numbers 1..n^2. 10
1, 6, 777, 79455, 13602389, 3722956267 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(5) = 1 + 2*(A085000(5) - (number of terms of A088238)).

LINKS

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

EXAMPLE

a(2)=6 because the determinants of the 24 2 X 2 matrices whose entries are all permutations of 1,2,3,4 can only assume the values -10,-5,-2,2,5,10.

MATHEMATICA

f[n_] := (p = Permutations[ Table[i, {i, n^2}]]; Length[ Union[ Table[ Det[ Partition[ p[[i]], n]], {i, 1, (n^2)!}]]]) (* Robert G. Wilson v *)

PROG

See link given in A088238.

CROSSREFS

Cf. A085000, A088214, A088215, A088216, A088238, A325900.

Sequence in context: A130688 A214009 A332176 * A242850 A020542 A045480

Adjacent sequences:  A088214 A088215 A088216 * A088218 A088219 A088220

KEYWORD

nonn,more,hard

AUTHOR

Hugo Pfoertner, Sep 23 2003

EXTENSIONS

Minor edits and a(6) from Hugo Pfoertner, Sep 08 2019

STATUS

approved

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Last modified September 29 12:15 EDT 2020. Contains 337431 sequences. (Running on oeis4.)