|
| |
| |
|
|
|
-70, 180, 430, 680, 930, 1180, 1430, 1680, 1930, 2180, 2430, 2680, 2930, 3180, 3430, 3680, 3930, 4180, 4430, 4680, 4930, 5180, 5430, 5680, 5930, 6180, 6430, 6680, 6930, 7180, 7430, 7680, 7930, 8180, 8430, 8680, 8930, 9180
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
COMMENTS
| The identity (1250n^2-700n+99)^2-(25n^2-14n+2)*(250n-70)^2=1 can be written as A154359(n)^2-A154357(n)*a(n)^2=1. See also the third comment in A154357.
|
|
|
LINKS
| Index to sequences with linear recurrences with constant coefficients, signature (2,-1).
|
|
|
FORMULA
| G.f.: -10*(7-32*x)/(1-x)^2. - Bruno Berselli, Dec 13 2011
|
|
|
CROSSREFS
| Cf. A154360, A154359, A154358, A154357, A154355.
Sequence in context: A063320 A044402 A044783 * A165762 A165764 A153669
Adjacent sequences: A154358 A154359 A154360 * A154362 A154363 A154364
|
|
|
KEYWORD
| sign,easy
|
|
|
AUTHOR
| Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jan 08 2009
|
|
|
EXTENSIONS
| Offset changed and Librandi's comment rewritten from Bruno Berselli, Dec 13 2011
|
| |
|
|
