The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A185161 G.f. = 1/(1-g(x)) where g(x) is the g.f. for A141309. 0
 1, 2, 7, 36, 283, 2898, 36169, 524976, 8659186, 159736316, 3257811334, 72797444280, 1769125982092, 46466434382032, 1311960028913384, 39633438764146568, 1275742281105759813, 43593785716301112538, 1576217593145774955007 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Jean-Christophe Novelli and Jean-Yves Thibon, Free quasi-symmetric functions and descent algebras for wreath products, and noncommutative multi-symmetric functions (2008); arXiv:0806.3682 [math.CO], 2008; Discrete Math. 310 (2010), no. 24, 3584-3606. See Eq. 37. MATHEMATICA terms = 19; c[0] = 0; c[n_] := c[n] = n! - Sum[k! c[n - k], {k, 1, n - 1}]; s = (Product[1/(1 - x^k)^(2^k c[k]), {k, 1, terms}] + O[x]^terms - 1)/x; g[x_] = ((-1/(1 + x s) + O[x]^terms) + 1); CoefficientList[1/(1 - g[x]) + O[x]^terms, x] (* Jean-François Alcover, Feb 13 2019 *) CROSSREFS Cf. A141309. Sequence in context: A123549 A009704 A141308 * A012712 A012363 A012717 Adjacent sequences:  A185158 A185159 A185160 * A185162 A185163 A185164 KEYWORD nonn AUTHOR N. J. A. Sloane, Jan 23 2012 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 22 02:46 EST 2022. Contains 350481 sequences. (Running on oeis4.)