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!)
A016763 a(n) = (2*n+1)^11. 6

%I #25 Sep 08 2022 08:44:41

%S 1,177147,48828125,1977326743,31381059609,285311670611,1792160394037,

%T 8649755859375,34271896307633,116490258898219,350277500542221,

%U 952809757913927,2384185791015625,5559060566555523,12200509765705829,25408476896404831,50542106513726817,96549157373046875

%N a(n) = (2*n+1)^11.

%H Vincenzo Librandi, <a href="/A016763/b016763.txt">Table of n, a(n) for n = 0..10000</a>

%H <a href="/index/Rec#order_12">Index entries for linear recurrences with constant coefficients</a>, signature (12,-66,220,-495,792,-924,792,-495,220,-66,12,-1).

%F G.f.: (1+x)*(x^10 +177134*x^9 +46525293*x^8 +1356555432*x^7 +9480267666*x^6 +19107752148*x^5 +9480267666*x^4 +1356555432*x^3 +46525293*x^2+ 177134*x +1)/(x-1)^12 . - _R. J. Mathar_, Jul 07 2017

%F From _Amiram Eldar_, Oct 11 2020: (Start)

%F Sum_{n>=0} 1/a(n) = 2047*zeta(11)/2048.

%F Sum_{n>=0} (-1)^n/a(n) = 50521*Pi^11/14863564800. (End)

%t Table[(2*n+1)^11, {n,0,20}] (* _G. C. Greubel_, Sep 15 2018 *)

%t LinearRecurrence[{12,-66,220,-495,792,-924,792,-495,220,-66,12,-1},{1,177147,48828125,1977326743,31381059609,285311670611,1792160394037,8649755859375,34271896307633,116490258898219,350277500542221,952809757913927},20] (* _Harvey P. Dale_, Nov 15 2020 *)

%o (Magma) [(2*n+1)^11: n in [0..20]]; // _Vincenzo Librandi_, Sep 07 2011

%o (Maxima) A016763(n):=(2*n+1)^11$

%o makelist(A016763(n),n,0,20); /* _Martin Ettl_, Nov 12 2012 */

%o (PARI) vector(20, n, n--; (2*n+1)^11) \\ _G. C. Greubel_, Sep 15 2018

%Y Cf. A016751.

%K nonn,easy

%O 0,2

%A _N. J. A. Sloane_

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 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)