|
|
|
|
2, 3, 5, 8, 9, 11, 12, 14, 17, 19, 20, 21, 23, 26, 27, 29, 30, 31, 33, 36, 38, 39, 41, 44, 45, 47, 48, 50, 53, 55, 56, 57, 59, 62, 64, 65, 67, 70, 71, 73, 74, 75, 77, 80, 81, 83, 84, 86, 89, 91, 92, 93, 95, 98, 99, 101, 102, 103, 105, 108, 110, 111, 113, 116
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
a(n) - a(n-1) is in {1,2,3} for n>=2. Conjecture: a(n)/n -> 9/5.
|
|
LINKS
|
|
|
EXAMPLE
|
As a word, A284848 = 01101001101101001011101..., in which 1 is in positions 2,3,5,8,9,...
|
|
MATHEMATICA
|
s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0}}] &, {0}, 9] (* A010060 *)
w = StringJoin[Map[ToString, s]]
w1 = StringReplace[w, {"1100" -> "1"}]
st = ToCharacterCode[w1] - 48 (* A284848 *)
Flatten[Position[st, 0]] (* A285091 *)
Flatten[Position[st, 1]] (* A285092 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|