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Search: id:A130834
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| A130834 |
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Decimal expansion of the limit of the (2/n^2)th power of the number of distinct dimer coverings on the n X n square grid, n even, as n goes to infinity. |
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+0
1
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| 1, 7, 9, 1, 6, 2, 2, 8, 1, 2, 0, 6, 9, 5, 9, 3, 4, 2, 4, 7, 3, 0, 5, 4, 7, 0, 8, 9
(list; cons; graph; listen)
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OFFSET
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1,2
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REFERENCES
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S. R. Finch, Several Constants Arising in Statistical Mechanics, Annals Combinat. vol 3 (1999) issue (2-4) pp. 323-335.
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FORMULA
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Equals exp(2*A006752/A000796).
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EXAMPLE
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1.791622812069593424730547089...
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MAPLE
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evalf(exp(2*Catalan/Pi));
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CROSSREFS
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Sequence in context: A120670 A091900 A086318 this_sequence A132806 A016629 A154203
Adjacent sequences: A130831 A130832 A130833 this_sequence A130835 A130836 A130837
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KEYWORD
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cons,nonn
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AUTHOR
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R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 18 2007
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