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 A101800 a(n)= abs(det[A000166(i+j+1)]), i,j=0...n, is the absolute value of the Hankel determinant of order n+1 of the derangements numbers, cf. A000166. 2
 0, 1, 16, 2160, 4644864, 220962816000, 126311423016960000, 97655159393202733056000000, 2873961139404949958783139840000000000, 5118723340142578530942677236206891171840000000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS a(n) = abs(product( (p!)^2,p=0..n )*(n+1)!*LaguerreL(n+1,0,1)), n=0,1..., where LaguerreL(n,lambda,x) are generalized Laguerre polynomial. LINKS FORMULA a(n) = abs(A055209(n)*A009940(n+1)). [corrected by Vaclav Kotesovec, Feb 25 2019] CROSSREFS Cf. A000166, A055209, A009940, A101799. Sequence in context: A086804 A317450 A121366 * A208148 A265593 A304399 Adjacent sequences:  A101797 A101798 A101799 * A101801 A101802 A101803 KEYWORD nonn AUTHOR Karol A. Penson, Dec 17 2004 STATUS approved

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Last modified July 23 13:58 EDT 2019. Contains 325254 sequences. (Running on oeis4.)