STATUS
proposed
approved
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Revision History for A080039
(Bold, blue-underlined text is an addition; faded, red-underlined text is aShowing entries 1-10 | older changes
STATUS
editing
proposed
PROG
(PARI) t='t+O('t^50); Vec((1-t^2+2t2*t^3)/(1-2t2*t-2t2*t^2+2t2*t^3+t^4)) \\ G. C. Greubel, Jul 05 2017
STATUS
approved
editing
STATUS
editing
approved
FORMULA
G.f.: g(t) = (1-t^2+2*t^3)/(1-2*t-2*t^2+2*t^3+t^4).
STATUS
approved
editing
STATUS
reviewed
approved
STATUS
proposed
reviewed
STATUS
editing
proposed
FORMULA
fract((1+sqrt(2))^n)) = (1/2)*(1+(-1)^n)-(-1)^n*(1+sqrt(2))^(-n) = (1/2)*(1+(-1)^n)-(1-sqrt(2))^n.
STATUS
approved
editing
STATUS
proposed
approved