|
|
|
|
1, 7, 60, 503, 4080, 32743, 262108, 2097103, 16777152, 134217647, 1073741724, 8589934471, 68719476592, 549755813719, 4398046510908, 35184372088607, 281474976710400, 2251799813684959, 18014398509481660
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
FORMULA
|
a(n) = 11*a(n-1) -27*a(n-2) +25*a(n-3) -8*a(n-4) for n>3. - Vincenzo Librandi, Oct 06 2014
|
|
MATHEMATICA
|
Table[8^n - n^2, {n, 0, 25}] (* or *) CoefficientList[Series[(1 - 4 x + 10 x^2 + 7 x^3)/((1 - 8 x) (1 - x)^3), {x, 0, 30}], x] (* Vincenzo Librandi, Oct 06 2014 *)
LinearRecurrence[{11, -27, 25, -8}, {1, 7, 60, 503}, 30] (* Harvey P. Dale, Feb 13 2023 *)
|
|
PROG
|
|
|
CROSSREFS
|
Cf. similar sequences listed in A024025.
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|