|
|
A097905
|
|
Triangle where a(m,n) = largest divisor of m! coprime to n.
|
|
0
|
|
|
1, 2, 1, 6, 3, 2, 24, 3, 8, 3, 120, 15, 40, 15, 24, 720, 45, 80, 45, 144, 5, 5040, 315, 560, 315, 1008, 35, 720, 40320, 315, 4480, 315, 8064, 35, 5760, 315, 362880, 2835, 4480, 2835, 72576, 35, 51840, 2835, 4480, 3628800, 14175, 44800, 14175, 145152, 175
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Right edge of triangle is sequence A095996.
|
|
LINKS
|
|
|
EXAMPLE
|
a(6,3) = 80 because 80 is largest divisor of 720 which is coprime to 3.
|
|
MAPLE
|
|
|
MATHEMATICA
|
Flatten[Table[Table[Select[Divisors[m! ], GCD[ #, n]==1&][[ -1]], {n, 1, m}], {m, 1, 10}]] (* Stefan Steinerberger, Nov 09 2007 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|