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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A114317 a(n+1) = a(n)^2 + 2*n. 0
1, 3, 13, 175, 30633, 938380699, 880558336255728613, 775382983549456819927133059506903783, 601218771178057225431491345601197053905427210323124545159875839219711105 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..9.

FORMULA

a(n) = a(n-1)^2 + 2*(n-1).

PROG

(PARI) a(n) = if (n==1, 1, a(n-1)^2 + 2*(n-1)) \\ Michel Marcus, Jun 29 2013

CROSSREFS

Sequence in context: A213794 A239979 A261361 * A168320 A323134 A081299

Adjacent sequences:  A114314 A114315 A114316 * A114318 A114319 A114320

KEYWORD

nonn

AUTHOR

Rod Edwards (edwards(AT)math.uvic.ca), Feb 05 2006

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 June 16 13:21 EDT 2019. Contains 324152 sequences. (Running on oeis4.)