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A015655
Number of ordered 5-tuples of integers from [ 2,n ] with no common factors among quadruples.
0
0, 2, 7, 32, 56, 156, 266, 498, 750, 1366, 1846, 3037, 4086, 5794, 7615, 11061, 13597, 18938, 23262, 30012, 36537, 47920, 56072, 71259, 84110, 102874, 119889, 148382, 167710, 204747, 234427, 275994, 313632, 370638, 412408, 487120
OFFSET
2,2
CROSSREFS
Sequence in context: A158940 A102161 A271817 * A320682 A344130 A327214
KEYWORD
nonn
STATUS
approved