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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A203193 (n-1)-st elementary symmetric function of the first n terms of (1,2,1,3,1,4,1,5,...)=A133622. 1

%I #5 Mar 30 2012 18:58:05

%S 1,3,5,17,23,98,122,634,754,4644,5364,38268,43308,351504,391824,

%T 3566736,3929616,39659040,43287840,479795040,519711840,6276458880,

%U 6755460480,88299987840,94527008640,1329605141760,1416783432960

%N (n-1)-st elementary symmetric function of the first n terms of (1,2,1,3,1,4,1,5,...)=A133622.

%t f[k_] := If[Mod[k, 2] == 1, 1, 1 + k/2];

%t t[n_] := Table[f[k], {k, 1, n}]

%t a[n_] := SymmetricPolynomial[n - 1, t[n]]

%t Table[a[n], {n, 1, 33}] (* A203193 *)

%Y Cf. A133622.

%K nonn

%O 1,2

%A _Clark Kimberling_, Dec 30 2011

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)