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Search: id:A123072
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| A123072 |
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Bishops on an 8n+1 X 8n+1 board (see Robinson paper for details). |
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+0
3
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| 2, 72, 7200, 1411200, 457228800, 221298739200, 149597947699200, 134638152929280000, 155641704786247680000, 224746621711341649920000, 396453040698806670458880000, 838894634118674914690990080000, 2097236585296687286727475200000000, 6115541882725140128097317683200000000
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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R. W. Robinson, Counting arrangements of bishops, pp. 198-214 of Combinatorial Mathematics IV (Adelaide 1975), Lect. Notes Math., 560 (1976). [The sequence zeta(2k+1).]
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MAPLE
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For Maple program see A005635.
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CROSSREFS
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Adjacent sequences: A123069 A123070 A123071 this_sequence A123073 A123074 A123075
Sequence in context: A030993 A070775 A051443 this_sequence A099681 A062082 A067689
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KEYWORD
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nonn
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AUTHOR
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njas, Sep 28 2006
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