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A071409
Determinant of the n X n matrix m(i,j)=i^j+j^i.
1
2, 7, 80, 2692, -188160, 673763328, 53114341552128, 11442355482580107264, 101868843539003372580372480, -11188458083483956358422238173593600, 39367352051951445285669984261580278202368000
OFFSET
1,1
COMMENTS
If n==0 mod 5 a(n) < 0
PROG
(PARI) for(n=1, 20, print1(matdet(matrix(n, n, i, j, i^j+j^i)), ", "))
CROSSREFS
Sequence in context: A354426 A307291 A326262 * A232041 A135756 A263368
KEYWORD
easy,sign
AUTHOR
Benoit Cloitre, May 28 2002
STATUS
approved