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A006867
Number of irreducible polyhedral graphs with n faces.
0
1, 2, 5, 20, 107, 826, 7703, 81231, 914973, 10772406
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OFFSET
4,2
COMMENTS
A polyhedral graph is irreducible if it ceases to be 3-connected upon removal of any edge. -
Andrey Zabolotskiy
, Feb 28 2024
REFERENCES
M. B. Dillencourt, personal communication.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Table of n, a(n) for n=4..13.
M. B. Dillencourt,
Polyhedra of small orders and their Hamiltonian properties
, J. Comb. Theory, Ser. B, 66 (1996) 87-122.
CROSSREFS
Cf.
A006866
,
A000944
.
Sequence in context:
A261779
A227096
A152562
*
A170946
A296727
A201224
Adjacent sequences:
A006864
A006865
A006866
*
A006868
A006869
A006870
KEYWORD
nonn
,
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AUTHOR
N. J. A. Sloane
EXTENSIONS
a(13) from Dillencourt (1996) added by
Andrey Zabolotskiy
, Feb 28 2024
STATUS
approved