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!)
A158898 Number of spanning trees in C_7 X P_n. 5
7, 35287, 113742727, 347251215703, 1050773495363767, 3174564739209417463, 9588099190533549457408, 28957256518828921149989143, 87453655435340440175476698487, 264117827347202707929587420182327 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Cycle Graph
Eric Weisstein's World of Mathematics, Path Graph
FORMULA
See program.
MAPLE
a:= n-> 7* (Matrix([222727, 4031, 71, 1, 0, -1, -71, -4031]). Matrix(8, (i, j)-> if i=j-1 then 1 elif j=1 then [71, -952, 3976, -6384, 3976, -952, 71, -1][i] else 0 fi)^n)[1, 5]^2: seq(a(n), n=1..15);
CROSSREFS
7th column of A173958.
Sequence in context: A201037 A300200 A156169 * A210846 A068251 A033984
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Mar 29 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 April 22 19:08 EDT 2024. Contains 371906 sequences. (Running on oeis4.)