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A093763
Duplicate of A002548.
0
1, 1, 12, 6, 180, 10, 560, 1260, 12600, 1260, 166320, 13860, 2522520, 2702700
OFFSET
1,3
CROSSREFS
Sequence in context: A234516 A177690 A038332 * A002548 A363151 A359632
KEYWORD
dead
STATUS
approved