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Search: id:A072149
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| A072149 |
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Coordination sequence for AlPO_4-11 structure with respect to node (X) where decagon and two hexagons meet. |
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+0
6
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| 1, 3, 6, 8, 10, 13, 16, 19, 20, 22, 28, 31, 30, 33, 38, 40, 42
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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The terms shown were computed by hand and could be wrong! There are three types of nodes in this structure.
The coordination sequence with respect to a particular node gives the number of nodes that can be reached from that node in n steps along edges.
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REFERENCES
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M. E. Davis, Ordered porous materials for emerging applications, Nature, 417 (Jun 20 2002), 813-821 (gives structure).
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LINKS
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N. J. A. Sloane, AlPO_4-11 structure, after Davis
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CROSSREFS
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Cf. A072150-A072154.
Sequence in context: A099135 A047282 A064437 this_sequence A001066 A099518 A121741
Adjacent sequences: A072146 A072147 A072148 this_sequence A072150 A072151 A072152
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KEYWORD
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nonn,easy,more
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Jun 28 2002
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 29 2007
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