A015653 Number of ordered 5-tuples of integers from [ 1,n ] with no common factors among quadruples.

1, 4, 15, 36, 95, 162, 345, 555, 942, 1376, 2277, 3049, 4694, 6216, 8560, 11077, 15491, 18956, 25626, 31254, 39682, 47942, 61624, 71912, 89989, 105658, 127911, 148410, 181397, 204777, 247269, 282117, 329934, 373740, 438398, 487156

Offset

1,2

Links

Table of n, a(n) for n=1..36.

Crossrefs

Sequence in context: A077414 A304487 A350689 * A106199 A113289 A212974

Adjacent sequences: A015650 A015651 A015652 * A015654 A015655 A015656

Keyword

nonn

Author

Olivier Gérard

Status

approved