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A075711
Duplicate of A027611.
0
1, 1, 2, 3, 12, 10, 20, 35, 280, 252, 2520, 2310, 27720, 25740, 24024, 45045, 720720
OFFSET
1,3
CROSSREFS
Sequence in context: A334914 A261576 A081526 * A079077 A027611 A303221
KEYWORD
dead
STATUS
approved