login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A168558 a(n) = n + a(n-1)^2 for n>1, a(1)=0. 1
0, 2, 7, 53, 2814, 7918602, 62704257634411, 3931823925482590177731316929, 15459239380997324838780881526042196711953237316641991050 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..13

MATHEMATICA

RecurrenceTable[{a[1] == 0, a[n] == a[n-1]^2 + n}, a, {n, 20}] (* Vincenzo Librandi, Sep 24 2014 *)

PROG

(MAGMA) [n le 1 select (n-1) else Self(n-1)^2+n: n in [1..10] ]; // Vincenzo Librandi, Sep 24 2014

CROSSREFS

Sequence in context: A053465 A193191 A180720 * A024027 A079410 A283335

Adjacent sequences:  A168555 A168556 A168557 * A168559 A168560 A168561

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Nov 29 2009

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 July 25 16:39 EDT 2021. Contains 346291 sequences. (Running on oeis4.)