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A059201
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Number of T_0-covers of a labeled n-set.
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4
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1, 1, 4, 96, 31692, 2147001636, 9223371991763269704, 170141183460469231473432887375376674952, 57896044618658097711785492504343953920509909728243389682424010192567186540224
(list; graph; refs; listen; history; internal format)
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