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A015656
Number of ordered 5-tuples of integers from [ 1,n ] with no common factors among triples.
0
1, 3, 9, 18, 51, 72, 176, 264, 447, 586, 1128, 1362, 2374, 2943, 3868, 4841, 7578, 8633, 12828, 14847, 18432, 21480, 30081, 33223, 43022, 49051, 59449, 66796, 87627, 93688, 120554, 134772, 156325, 173243, 205164, 219513, 272331, 298743
OFFSET
1,2
CROSSREFS
Sequence in context: A062882 A363534 A027101 * A188797 A056372 A181574
KEYWORD
nonn
STATUS
approved