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A001573
Another approximation to
A000084
(n).
(Formerly M1190 N0460)
+0
3
1, 2, 4, 9, 23, 63, 177, 514, 1527, 4625, 14230, 44357, 139779, 444558, 1425151, 4600339, 14939849, 48778197, 160019885, 527200711
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Maintained by
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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.
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