|
| |
|
|
A277732
|
|
Positions of 0's in A277731.
|
|
4
|
|
|
|
1, 3, 6, 8, 11, 12, 14, 17, 19, 22, 23, 25, 27, 30, 32, 35, 36, 38, 41, 43, 46, 47, 49, 51, 54, 56, 59, 61, 64, 65, 67, 70, 72, 75, 76, 78, 80, 83, 85, 88, 89, 91, 94, 96, 99, 100, 102, 104, 107, 109, 112, 114, 117, 118, 120, 123, 125, 128, 129, 131, 134, 136, 139, 140, 142, 144, 147, 149, 152, 153
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
MAPLE
|
with(ListTools);
T:=proc(S) Flatten(subs( {0=[0, 1], 1=[0, 1, 2], 2=[0]}, S)); end;
S:=[0];
for n from 1 to 14 do S:=T(S); od:
p0:=[]: p1:=[]: p2:=[]:
for i from 1 to nops(S) do
j:=S[i];
if j=0 then p0:=[op(p0), i];
elif j=1 then p1:=[op(p1), i];
else p2:=[op(p2), i]; fi: od:
|
|
|
MATHEMATICA
|
m = 1000; (* number of terms of A277731 *)
S[1] = {0};
S[n_] := S[n] = SubstitutionSystem[{0 -> {0, 1}, 1 -> {0, 1, 2}, 2 -> {0}}, S[n - 1]];
For[n = 2, True, n++, If[PadRight[S[n], m] == PadRight[S[n - 1], m], Print["n = ", n]; Break[]]];
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
