|
Search: id:A086815
|
|
| |
|
| 0, 16, 1458, 196608, 39062500, 10883911680, 4069338437094, 1970324836974592, 1200757082375992968, 900000000000000000000, 814027493868397611133210, 874465319237299285467856896, 1100799962319223399900795392108
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
(-1)*determinant of the 2n X 2n matrix M_(i,j)=j if (i+j) is multiple of n, M_(i,j)=i otherwise.
|
|
EXAMPLE
|
For n=3 the matrix is : [1 2 1 1 5 1], [1 2 2 4 2 2], [3 3 3 3 3 6], [4 2 4 4 5 4], [1 5 5 4 5 5], [6 6 3 6 6 6]
|
|
PROGRAM
|
(PARI) a(n)=(n-1)*n^(2*n)
|
|
CROSSREFS
|
Cf. A062206.
Sequence in context: A057994 A160251 A106176 this_sequence A054947 A071900 A145406
Adjacent sequences: A086812 A086813 A086814 this_sequence A086816 A086817 A086818
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 06 2003
|
|
|
Search completed in 0.002 seconds
|
