|
|
A095866
|
|
Largest n-digit number - largest n-digit triangular number.
|
|
7
|
|
|
3, 8, 9, 129, 318, 1008, 2843, 8988, 38439, 121089, 42708, 88208, 2034819, 1749819, 2235879, 104271309, 447194784, 1234742858, 2234186964, 3266133123, 22172578524, 114481278033, 204796672749, 841526085621, 355055477499
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
FORMULA
|
|
|
MATHEMATICA
|
lndt[n_]:=Module[{c=Floor[(Sqrt[8*10^n+1]-1)/2]}, (c(c+1))/2]; Join[{3}, Table[ 10^n-1-lndt[n], {n, 2, 30}]] (* Harvey P. Dale, May 16 2017 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,easy,nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|