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!)
A014940 a(1)=1, a(n)=n*22^(n-1)+a(n-1). 3
1, 45, 1497, 44089, 1215369, 32137161, 825796489, 20780659593, 514663521417, 12587355699337, 304746506405001, 7316566123340937, 174431600326980745, 4133772410690139273, 97461091512107447433, 2287542179758700278921 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
FORMULA
G.f.: x/((1-x) (-1+22 x)^2). - Harvey P. Dale, Apr 21 2011
MATHEMATICA
Table[(1+22^n (21n-1))/441, {n, 20}] (* or *) CoefficientList[ Series[1/((1-x) (-1+22 x)^2), {x, 0, 20}], x] (* Harvey P. Dale, Apr 21 2011 *)
CROSSREFS
Sequence in context: A107399 A053112 A240686 * A273436 A049397 A215859
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 May 18 02:38 EDT 2024. Contains 372617 sequences. (Running on oeis4.)