|
|
A017028
|
|
a(n) = (7*n + 3)^12.
|
|
7
|
|
|
531441, 1000000000000, 582622237229761, 36520347436056576, 787662783788549761, 9065737908494995456, 68952523554931640625, 390877006486250192896, 1779197418239532716881, 6831675453247426400256
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,1
|
|
LINKS
|
Index entries for linear recurrences with constant coefficients, signature (13, -78, 286, -715, 1287, -1716, 1716, -1287, 715, -286, 78, -13, 1).
|
|
FORMULA
|
G.f.: -(531441 + 999993091267*x + 569622278682159*x^2 + 29024258200077557*x^3 + 358056802003715946*x^4 + 1508793858724585278*x^5 + 2506096413822632190*x^6 + 1714130567777075370*x^7 + 467396391757977813*x^8 + 44810629431950799*x^9 + 1116033121151651*x^10 + 3138210272913*x^11 + 16777216*x^12)/(x-1)^13. - R. J. Mathar, Jul 07 2017
|
|
MATHEMATICA
|
|
|
PROG
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|