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A103941
Number of unrooted loopless n-edge maps in the plane (planar with a distinguished outside face).
+0
2
1, 2, 6, 22, 103, 614, 3872, 26414, 186988, 1367976, 10254326, 78461338, 610598818, 4821248244, 38546510368, 311560875422, 2542507084588, 20925300483992, 173530381632724, 1448900079476152
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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