login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A199683 3*10^n+1. 3
4, 31, 301, 3001, 30001, 300001, 3000001, 30000001, 300000001, 3000000001, 30000000001, 300000000001, 3000000000001, 30000000000001, 300000000000001, 3000000000000001, 30000000000000001, 300000000000000001, 3000000000000000001 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

S. W. Golomb, Properties of the sequence 3.2^n+1, Math. Comp., 30 (1976), 657-663.

S. W. Golomb, Properties of the sequence 3.2^n+1, Math. Comp., 30 (1976), 657-663. [Annotated scanned copy]

Index entries for linear recurrences with constant coefficients, signature (11,-10).

FORMULA

a(n) = 10*a(n-1)-9.

a(n) = 11*a(n-1)-10*a(n-2).

G.f.: (4-13*x)/((1-x)*(1-10*x)).

MATHEMATICA

3*10^Range[0, 20]+1 (* or *) LinearRecurrence[{11, -10}, {4, 31}, 20] (* Harvey P. Dale, Dec 12 2016 *)

PROG

(MAGMA) [3*10^n+1: n in [0..30]];

CROSSREFS

Primes: A056807, A259866.

Sequence in context: A003436 A307504 A276316 * A114475 A243312 A076280

Adjacent sequences:  A199680 A199681 A199682 * A199684 A199685 A199686

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Nov 09 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 23 22:34 EDT 2019. Contains 328375 sequences. (Running on oeis4.)