A187748 - cp's OEIS frontend

A187748 Determinant of the n X n matrix m_(i,j) = gcd(2^i-1, 2^j-1).

n	a(n)
1	1
2	2
3	12
4	144
5	4320
6	233280
7	29393280
8	7054387200
9	3555411148800
10	3519857037312000
11	7201627498340352000
12	28950542543328215040000
13	237104943429858081177600000
14	3853903750508913251460710400000
15	126138269754156730720309051392000000
16	8234306249551351381421774874869760000000
17	1079270520128695625562952032849179443200000000
18	282311265573183686952254740944556962034483200000000

[1, 2, 12, 144, 4320, 233280, 29393280, 7054387200, 3555411148800, 3519857037312000, 7201627498340352000, 28950542543328215040000, 237104943429858081177600000, 3853903750508913251460710400000, 126138269754156730720309051392000000, 8234306249551351381421774874869760000000, 1079270520128695625562952032849179443200000000, 282311265573183686952254740944556962034483200000000]

cp's OEIS Frontend

A187748 Determinant of the n X n matrix m_(i,j) = gcd(2^i-1, 2^j-1).

Table of values

List of values