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!)
A113110 Triangle T, read by rows, equal to the matrix cube of triangle A113106, which satisfies the recurrence: A113106(n,k) = [A113106^5](n-1,k-1) + [A113106^5](n-1,k). 4

%I #3 Mar 30 2012 18:36:51

%S 1,3,1,33,18,1,1251,903,93,1,173505,151716,22278,468,1,94216515,

%T 94758285,17789766,551778,2343,1,210576669921,235461277878,

%U 53137278735,2167944516,13749903,11718,1,2002383115518243,2432344424403219

%N Triangle T, read by rows, equal to the matrix cube of triangle A113106, which satisfies the recurrence: A113106(n,k) = [A113106^5](n-1,k-1) + [A113106^5](n-1,k).

%e Triangle begins:

%e 1;

%e 3,1;

%e 33,18,1;

%e 1251,903,93,1;

%e 173505,151716,22278,468,1;

%e 94216515,94758285,17789766,551778,2343,1;

%e 210576669921,235461277878,53137278735,2167944516,13749903,11718,1;

%o (PARI) {T(n,k)=local(M=matrix(n+1,n+1));for(r=1,n+1, for(c=1,r, M[r,c]=if(r==c,1,if(c>1,(M^5)[r-1,c-1])+(M^5)[r-1,c]))); return((M^3)[n+1,k+1])}

%Y Cf. A113106.

%K nonn,tabl

%O 0,2

%A _Paul D. Hanna_, Oct 14 2005

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 August 25 09:43 EDT 2024. Contains 375425 sequences. (Running on oeis4.)