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A129435
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Number of isomorphism classes of 7-regular multigraphs of order 2n, loops allowed.
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8
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OFFSET
| 1,1
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COMMENTS
| Computed using software at http://cs.anu.edu.au/~bdm/nauty/
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LINKS
| R. C. Read, The enumeration of locally restricted graphs (I), J. London Math. Soc. 34 (1959) 417-436. [From Jason Kimberley (Jason.Kimberley(AT)newcastle.edu.au), Nov 09 2009]
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FORMULA
| a(n)=N\{S_{2n}[S_7] * S_{7n}[S_2]\} [From Jason Kimberley (Jason.Kimberley(AT)newcastle.edu.au), Nov 09 2009]
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CROSSREFS
| Cf. A129434, A129424, A129427, A129429, A129431, A129433, A129437
Sequence in context: A202990 A202989 A059105 * A129702 A180818 A091330
Adjacent sequences: A129432 A129433 A129434 * A129436 A129437 A129438
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KEYWORD
| nonn
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AUTHOR
| Brendan McKay (bdm(at)cs.anu.edu.au), Apr 15 2007
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EXTENSIONS
| Using equation (5.8) of Read 1959, McKay's terms were verified by, and new term a(6) was computed by Jason Kimberley (Jason.Kimberley(AT)newcastle.edu.au), Nov 09 2009
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