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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A217144 Alternating sums of squares of Bell numbers (A000110). 1

%I

%S 1,0,4,21,204,2500,38709,730420,16409180,430786429,13019414196,

%T 447437830704,17306961847705,746907935199264,35695643204860420,

%U 1876878693983656605,107956500727342113004,6758630146906528885412,458470139353155531447869

%N Alternating sums of squares of Bell numbers (A000110).

%F a(n) = sum((-1)^(n-k)*Bell(k)^2, k=0..n).

%o (Maxima) makelist(sum((-1)^(n-k)*belln(k)^2,k,0,n),n,0,30);

%Y Cf. A000110, A005001, A087650, A217143.

%K nonn

%O 0,3

%A _Emanuele Munarini_, Sep 27 2012

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 November 22 13:47 EST 2019. Contains 329393 sequences. (Running on oeis4.)