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A214337
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Triangle read by rows: T(n,k) = number of rooted maps with n vertices and k faces on a non-orientable surface of type 3/2 (0 <= k <= n).
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5
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0, 0, 41, 0, 690, 16925, 0, 7150, 237652, 4306778, 0, 58760, 2518957, 56864524, 910734615, 0, 420182, 22417804, 613687758, 11675167470, 174833737848
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graph;
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history;
text;
internal format)
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OFFSET
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0,3
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REFERENCES
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Arques, Didier; and Giorgetti, Alain. Counting rooted maps on a surface. Theoret. Comput. Sci. 234 (2000), no. 1-2, 255--272. MR1745078 (2001f:05078).
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LINKS
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Table of n, a(n) for n=0..20.
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EXAMPLE
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Triangle begins:
0,
0,41,
0,690,16925,
0,7150,237652,4306778,
0,58760,2518957,56864524,910734615,
0,420182,22417804,613687758,11675167470,174833737848,
...
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CROSSREFS
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Diagonals give A118448, A214335, A213336, A213338.
Cf. A214806.
Sequence in context: A111401 A116101 A167265 * A053342 A297205 A283895
Adjacent sequences: A214334 A214335 A214336 * A214338 A214339 A214340
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KEYWORD
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nonn,tabl
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AUTHOR
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N. J. A. Sloane, Jul 27 2012
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STATUS
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approved
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