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A015649
Number of 5-tuples of different integers from [ 2,n ] with no common factors among triples.
0
0, 0, 0, 0, 0, 3, 6, 21, 36, 111, 142, 336, 463, 725, 965, 1769, 2060, 3461, 4156, 5633, 6846, 10371, 11585, 16147, 18924, 23973, 27508, 37822, 40704, 54583, 61865, 74222, 83539, 102970, 110719, 141215, 156763, 182613, 198681
OFFSET
2,6
CROSSREFS
Sequence in context: A300891 A056499 A056489 * A297189 A327890 A076102
KEYWORD
nonn
STATUS
approved