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A364206
a(n) is the number of n X n nonsingular matrices using all the integers from 1 to n^2.
2
1, 24, 360144, 20914499571840
OFFSET
1,2
FORMULA
a(n) = (n^2)! - A221976(n). - Vaclav Kotesovec, Jul 16 2023
CROSSREFS
Right diagonal of A364203.
Cf. A085000 (maximal determinant), A350565 (minimal permanent), A350566 (maximal permanent).
Cf. A364227 (with prime numbers).
Sequence in context: A159422 A028371 A013774 * A364227 A088020 A289746
KEYWORD
nonn,hard,more
AUTHOR
Stefano Spezia, Jul 13 2023
EXTENSIONS
a(4) from Vaclav Kotesovec, Jul 16 2023 (using A221976)
STATUS
approved