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A060079
Duplicate of A052502.
0
1, 2, 40, 2240, 246400, 44844800, 12197785600, 4635158528000, 2345390215168000
OFFSET
0,2
CROSSREFS
Sequence in context: A163826 A000816 A000819 * A052502 A209289 A246742
KEYWORD
dead
STATUS
approved