[seqfan] Cross-References to A006820
Jason Kimberley
Jason.Kimberley at newcastle.edu.au
Sun Mar 21 23:39:43 CET 2010
G'day Seqfans,
It seems, to me, that the following two cross-references to A006820 are accidental.
Otherwise, would someone add a comment explaining the relationship?
%N A051266 Numbers n such that maximal value of prime divisors of reduced residue system for n is 2.
%Y A051266 .................. A006820, ....................
%N A051267 Numbers n such that maximal value of prime divisors of reduced residue system for n is 3.
%Y A051267 .................. A006820, ....................
%N A006820 Number of connected regular graphs of degree 4 (or quartic graphs) with n nodes.
Thanks,
Jason.
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