login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A108915 Dimensions of the invariant subspaces in a sequence of modules of dimension (n+1)^(n-1) over the symmetric groups S_n. 0

%I

%S 1,2,3,6,12,27,61,142,338,821,2010,4967,12395,31165,78821,200476,

%T 512546,1316337,3394202,8784064,22809135,59407930,155162456,406294516,

%U 1066407001,2805143797,7393812949,19525497125,51653666339,136872356055

%N Dimensions of the invariant subspaces in a sequence of modules of dimension (n+1)^(n-1) over the symmetric groups S_n.

%F No simple formula is known, only a complicated sum over partitions.

%e a(3)=3 in the module M_3 = 3 s_{3} + 6 s_{2,1} + s_{1,1,1}.

%Y Cf. A000272.

%K nonn

%O 1,2

%A _F. Chapoton_, Jul 18 2005

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 24 11:34 EDT 2019. Contains 321448 sequences. (Running on oeis4.)