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Search: id:A072154
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| A072154 |
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Coordination sequence for AlPO_4-5 structure. |
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+0
6
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OFFSET
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0,2
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COMMENT
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There is only one type of node in this structure: each node meets a square, a hexagon and a 12-gon.
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_4-5 structure, after Davis
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CROSSREFS
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Cf. A072149-A072153.
Adjacent sequences: A072151 A072152 A072153 this_sequence A072155 A072156 A072157
Sequence in context: A082767 A047932 A139130 this_sequence A080751 A025218 A007078
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KEYWORD
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nonn,easy,more
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AUTHOR
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njas, Jun 28 2002
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