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!)
A246386 Column 0 of triangular matrix defined by exp(L) where L(n,k) = C(2*n, 2*k+1). 2

%I #3 Aug 24 2014 20:09:43

%S 1,2,8,46,376,3962,52268,837574,15919312,352811378,8988379220,

%T 260108194558,8465863112056,307308030658922,12350649661695548,

%U 546081624656924086,26415011148370442656,1390964198066780410082,79383302469711339262628,4890599813401910828495854,324080647716643946657858632

%N Column 0 of triangular matrix defined by exp(L) where L(n,k) = C(2*n, 2*k+1).

%o (PARI) {a(n)=local(L=matrix(n+1,n+1,r,c,if(r>=c,binomial(2*r-2,2*c-1))),A);

%o A=sum(m=0,n,L^m/m!);A[n+1,1]}

%o for(n=0,25,print1(a(n),", "))

%Y Cf. A246381, A246387.

%K nonn

%O 0,2

%A _Paul D. Hanna_, Aug 24 2014

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 24 16:25 EDT 2024. Contains 371961 sequences. (Running on oeis4.)