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A094836
a(n) = 2702*a(n-1) - a(n-2); a(-1) = -15; a(0) = 15.
1
-15, 15, 40545, 109552575, 296011017105, 799821658665135, 2161117825702177665, 5839339565225625385695, 15777893344121814089970225, 42631861976477576445474162255, 115191275282549067433857096442785, 311246783181585603728705429114242815
OFFSET
-1,1
COMMENTS
Trisection of A028230.
FORMULA
G.f.: 15*(2703*x-1)/(x*(x^2-2702*x+1)). - Philippe Deléham, Nov 19 2008
MATHEMATICA
LinearRecurrence[{2702, -1}, {-15, 15}, 13] (* or *)
CoefficientList[Series[(15 + 15 x)/(1 - 2702 x + x^2), {x, 0, 13}], x] (* Michael De Vlieger, Jul 12 2017 *)
PROG
(PARI) concat(-15, Vec((15 + 15*x)/(1-2702*x+x^2) + O(x^20))) \\ Michel Marcus, Jul 09 2017
CROSSREFS
Cf. A028230.
Sequence in context: A134912 A165836 A183827 * A247388 A291575 A004504
KEYWORD
sign,easy
AUTHOR
Lekraj Beedassy, Jun 03 2004
EXTENSIONS
Edited and extended by Ray Chandler, Jun 12 2004
STATUS
approved