|
| |
|
|
A019484
|
|
G.f. (7*x^3+7*x^2-7*x-8)/(-6*x^4-5*x^3+7*x^2+6*x-1).
|
|
1
| |
|
|
8, 55, 379, 2612, 18002, 124071, 855106, 5893451, 40618081, 279942687, 1929384798, 13297456486, 91647010581, 631637678776, 4353291555505, 30003193292641, 206784130187015, 1425170850320396, 9822378297435246
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,1
|
|
|
COMMENTS
| Agrees with A010918 for terms 0 through 11056 but then differs from it.
|
|
|
REFERENCES
| R. K. Guy, personal communication.
|
|
|
LINKS
| Index entries for sequences related to linear recurrences with constant coefficients
|
|
|
MAPLE
| - (8 + 7*x - 7*x^2 - 7*x^3) /(7*x^2 - 1 + 6*x - 6*x^4 - 5*x^3);
|
|
|
MATHEMATICA
| CoefficientList[ Series[(8 + 7 x - 7 x^2 - 7 x^3)/(1 - 6 x - 7 x^2 + 5 x^3 + 6 x^4), {x, 0, 18}], x] (* Robert G. Wilson v, (rgwv(AT)rgwv.com), May 16 2008 *)
|
|
|
CROSSREFS
| Cf. A010918.
Sequence in context: A033890 A010924 A010918 * A108984 A160429 A003722
Adjacent sequences: A019481 A019482 A019483 * A019485 A019486 A019487
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
EXTENSIONS
| The old definition was a(n) = 3*a(n-1) + a(n-2) - 2*a(n-3), but as R. J. Mathar pointed out, this did not match the entries. I have therefore replaced the definition with a g.f. found by Superseeker. - N. J. A. Sloane (njas(AT)research.att.com), May 16 2008
|
| |
|
|
