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Search: id:A129205
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| A129205 |
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From Wendt's determinant compute (A048954(2*n)/(1-4^n))^(1/2). |
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+0
2
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| 1, 5, 0, 2295, 453871, 0, 545539395584, 4883188189089105, 0, 14214363393075742724609375, 5968603205606800870499639536231, 0, 41302584753289717847206700750464023881130441
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OFFSET
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1,2
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REFERENCES
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P. Ribenboim, 13 Lectures on Fermat's last theorem, Springer-Verlag, NY, 1979, page 62. MR0551363 (81f:10023)
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FORMULA
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a(n)=0 if and only if n is divisible by 3.
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PROGRAM
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(PARI) {a(n)= if(n<1, 0, n*=2; sqrtint( matdet( matrix( n, n, i, j, binomial( n, (j-i)%n )))/ (1-2^n)))}
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CROSSREFS
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Sequence in context: A073911 A036946 A027641 this_sequence A098173 A058177 A079508
Adjacent sequences: A129202 A129203 A129204 this_sequence A129206 A129207 A129208
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KEYWORD
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nonn
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AUTHOR
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Michael Somos, Apr 03 2007
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