|
|
A079653
|
|
Triangular numbers using only the curved digits 0, 3, 6, 8 and 9.
|
|
1
|
|
|
0, 3, 6, 36, 66, 300, 630, 666, 903, 990, 3003, 6903, 33930, 39060, 39903, 63903, 66066, 69006, 93096, 306936, 333336, 339900, 600060, 609960, 630003, 669903, 690900, 833986, 930930, 936396, 963966, 3036880, 3069003, 3083886, 3306306, 3689686, 3966336, 3988900
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
LINKS
|
|
|
MATHEMATICA
|
t[n_] := n*(n + 1)/2; t /@ Select[Range[0, 10000], AllTrue[IntegerDigits[t[#]], MemberQ[{0, 3, 6, 8 , 9}, #1] &] &] (* Amiram Eldar, Aug 18 2020 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|