Search: id:A000033 Results 1-1 of 1 results found. %I A000033 M0602 N0216 %S A000033 0,2,3,4,40,210,1477,11672,104256,1036050,11338855,135494844,1755206648, %T A000033 24498813794,366526605705,5851140525680,99271367764480,1783734385752162, %U A000033 33837677493828171,675799125332580020,14173726082929399560,311462297063636041906 %N A000033 Coefficients of menage hit polynomials. %D A000033 J. Riordan, An Introduction to Combinatorial Analysis, Wiley, 1958, p. 197. %D A000033 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A000033 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A000033 David W. Wilson, Table of n, a(n) for n = 1..100 %F A000033 a(n) = coefficient of t^2 in polynomial p(t) = SUM(k = 0..n, (2n C(2n-k, k) (n-k)! (t-1)^k)/(2n-k)) %F A000033 a(n) = SUM(k = 2..n, ((-1)^k n (2n-k-1)! (n-k)!)/((2n-2k)! (k-2)!)) - David W. Wilson (davidwwilson(AT)comcast.net), Jun 22 2006 %Y A000033 a(n) = n*A000426(n) - Vladeta Jovovic(vladeta(AT)eunet.rs), Dec 27 2007 %Y A000033 A diagonal of A058087. Cf. A000179, A000425. %Y A000033 Sequence in context: A037326 A024634 A134305 this_sequence A060411 A037322 A037429 %Y A000033 Adjacent sequences: A000030 A000031 A000032 this_sequence A000034 A000035 A000036 %K A000033 nonn,easy %O A000033 1,2 %A A000033 N. J. A. Sloane (njas(AT)research.att.com) and Simon Plouffe (simon.plouffe(AT)gmail.com) %E A000033 Extended to 34 terms by N. J. A. Sloane (njas(AT)research.att.com), May 25 2005 %E A000033 Edited and further extended by David W. Wilson, Dec 27 2007 Search completed in 0.001 seconds