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Search: id:A020881
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| A020881 |
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Number of strong restricted edge-subgraphs in Moebius ladder M_n. |
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+0
1
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OFFSET
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2,1
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REFERENCES
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J. P. McSorley, Counting structures in the Moebius ladder, Discrete Math., 184 (1998), 137-164.
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FORMULA
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For large n, (3.2143)^n < a(n) < (6.4188)^n (Th. 23.1.) - C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 17 2005
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CROSSREFS
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Sequence in context: A140198 A107600 A008528 this_sequence A123277 A123595 A002165
Adjacent sequences: A020878 A020879 A020880 this_sequence A020882 A020883 A020884
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KEYWORD
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nonn,more
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AUTHOR
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njas
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