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!)
A066221 Bisection of A001189. 1
0, 3, 25, 231, 2619, 35695, 568503, 10349535, 211799311, 4809701439, 119952692895, 3257843882623, 95680443760575, 3020676745975551, 101990226254706559, 3666624057550245375, 139813029266338603263 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..90

MATHEMATICA

Table[(-2)^n*HypergeometricU[-n, 3/2, -1/2] - 1, {n, 0, 16}] (* Jean-Fran├žois Alcover, Apr 09 2014 *)

CROSSREFS

Sequence in context: A024217 A199679 A118726 * A332468 A134272 A335117

Adjacent sequences:  A066218 A066219 A066220 * A066222 A066223 A066224

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Dec 19 2001

EXTENSIONS

More terms from Sascha Kurz, Mar 24 2002

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 13 17:14 EDT 2021. Contains 345008 sequences. (Running on oeis4.)