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Search: id:A051944
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| 1, 5, 18, 65, 238, 882, 3300, 12441, 47190, 179894, 688636, 2645370, 10192588, 39373700, 152443080, 591385545, 2298248550, 8945490510, 34867625100, 136079265630, 531693754020
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OFFSET
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0,2
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REFERENCES
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A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 194-196.
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FORMULA
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The Hankel determinant transform is A025172(n-1). - Michael Somos Sep 17 2006
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PROGRAM
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(PARI) {a(n)=if(n<0, 0, (4*n+1)*binomial(2*n, n)/(n+1))} /* Michael Somos Sep 17 2006 */
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CROSSREFS
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Cf. A016777, A000108 and A051924.
Sequence in context: A029869 A033453 A147535 this_sequence A153373 A166677 A158879
Adjacent sequences: A051941 A051942 A051943 this_sequence A051945 A051946 A051947
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KEYWORD
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easy,nonn
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AUTHOR
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Barry E. Williams, Dec 20 1999
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