The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A167019 Column 3 of triangle T=A167015: a(n) = T(n+3,3) = [T^(n+3)](n-1,0) for n>0 with a(0)=1. 4
1, 1, 5, 27, 203, 2002, 24429, 353300, 5877619, 110140398, 2289730547, 52215711142, 1294830014579, 34674182292270, 997028749972868, 30635875305295776, 1001785692746640031, 34734713374858593257 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
In triangle T=A167015, row n of T equals the initial n terms in column 0 of matrix power T^n, reversed and with an appended '1'.
LINKS
PROG
(PARI) {A167015(n, k)=local(M, N); if(n==k|n==k+1, 1, if(n==k+2, k+2, N=matrix(n, n, r, c, if(r>=c, A167015(r-1, c-1))); M=matrix(n+1, n+1, r, c, if(r>=c, if(r<=n, N[r, c], (N^n)[n-k, 1]))); M[n+1, k+1]))}
(PARI) {a(n)=A167015(n+3, 3)}
CROSSREFS
Sequence in context: A023811 A126119 A105631 * A356538 A342904 A230563
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Oct 27 2009
STATUS
approved

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 May 20 06:19 EDT 2024. Contains 372703 sequences. (Running on oeis4.)