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A164873
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The number of permutations of length n that can be sorted by 5 pop stacks in parallel.
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0
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1, 1, 2, 6, 24, 120, 720, 5038, 40004, 347348, 3165888, 29362568, 272387290, 2509750674, 22933267716, 207994616888, 1875239211676, 16832320088082, 150613964836684, 1344743911906806, 11988640129482008, 106774648037691852, 950340529566921394, 8454752823292244122
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