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!)
A025445 Expansion of 1/((1-2x)(1-3x)(1-4x)(1-7x)). 0
1, 16, 167, 1454, 11529, 86772, 633739, 4547818, 32300477, 228024368, 1604029791, 11260172742, 78950652145, 553177103404, 3874344193523, 27128870214626, 189936063951333, 1329688724613480, 9308367341848135 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
FORMULA
a(n)=(2*7^(n+3)-5*4^(n+4)+10*3^(n+4)-3*2^(n+5))/120. [Yahia Kahloune, May 30 2013]
a(0)=1, a(1)=16, a(2)=167, a(3)=1454, a(n)=16*a(n-1)-89*a(n-2)+ 206*a(n-3)- 168*a(n-4). - Harvey P. Dale, Dec 07 2015
MATHEMATICA
CoefficientList[Series[1/((1-2x)(1-3x)(1-4x)(1-7x)), {x, 0, 30}], x] (* or *) LinearRecurrence[{16, -89, 206, -168}, {1, 16, 167, 1454}, 30] (* Harvey P. Dale, Dec 07 2015 *)
CROSSREFS
Sequence in context: A246057 A265598 A021744 * A022740 A205247 A067713
KEYWORD
nonn,easy
AUTHOR
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 February 23 02:28 EST 2024. Contains 370265 sequences. (Running on oeis4.)