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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A218753 a(n) = (49^n-1)/48. 33
0, 1, 50, 2451, 120100, 5884901, 288360150, 14129647351, 692352720200, 33925283289801, 1662338881200250, 81454605178812251, 3991275653761800300, 195572507034328214701, 9583052844682082520350, 469569589389422043497151 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Partial sums of powers of 49 (A087752).

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..600

Index entries related to partial sums

Index entries for linear recurrences with constant coefficients, signature (50,-49)

FORMULA

G.f.: x/((1-x)*(1-49*x)). - Vincenzo Librandi, Nov 08 2012

a(n) = 50*a(n-1) - 49*a(n-2) with a(0)=0, a(1)=1. - Vincenzo Librandi, Nov 08 2012

a(n) = 49*a(n-1) + 1 with a(0)=0. - Vincenzo Librandi, Nov 08 2012

a(n) = floor(49^n/48). - Vincenzo Librandi, Nov 08 2012

MATHEMATICA

LinearRecurrence[{50, -49}, {0, 1}, 30] (* Vincenzo Librandi, Nov 08 2012 *)

PROG

(PARI) A218753(n)=49^n\48

(Maxima) A218753(n):=floor(49^n/48)$ makelist(A218753(n), n, 0, 30); /* Martin Ettl, Nov 05 2012 */

(MAGMA) [n le 2 select n-1 else 50*Self(n-1) - 49*Self(n-2): n in [1..20]]; // Vincenzo Librandi, Nov 08 2012

CROSSREFS

Cf. A000225, A003462, A002450, A003463, A003464, A023000, A023001, A002452, A002275, A016123, A016125, A091030, A135519, A135518, A131865, A091045, A218721, A218722, A064108, A218724-A218734, A132469, A218736-A218752, A133853, A094028, A218723.

Sequence in context: A170683 A170731 A170769 * A120998 A267061 A223191

Adjacent sequences:  A218750 A218751 A218752 * A218754 A218755 A218756

KEYWORD

nonn,easy

AUTHOR

M. F. Hasler, Nov 04 2012

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 20 11:09 EDT 2018. Contains 316379 sequences. (Running on oeis4.)