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A072840
Duplicate of A023921.
0
1, 0, 0, 0, 0, 0, 0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 90, 0, 0, 0, 90, 240, 0, 0, 420, 252, 0, 0, 0, 720, 0, 0, 0, 0, 0, 0, 1700, 0, 0, 0, 1260, 2700, 0, 0, 3240, 1680, 0, 0, 0, 5220, 0, 0, 0, 0, 0, 0, 7740, 0, 0, 0, 4920, 10080, 0, 0, 12690, 7020, 0, 0, 0, 15120, 0, 0, 0, 0, 0, 0, 22680, 0, 0
OFFSET
0,10
CROSSREFS
Sequence in context: A137643 A351570 A023921 * A091234 A221873 A278073
KEYWORD
dead
STATUS
approved