|
| |
| |
|
|
|
2, 3, 5, 9, 11, 12, 14, 17, 20, 21, 23, 27, 30, 31, 33, 36, 38, 39, 41, 45, 47, 48, 50, 53, 56, 57, 59, 62, 64, 65, 67, 71, 74, 75, 77, 81, 83, 84, 86, 89, 92, 93, 95, 99, 102, 103, 105, 108, 110, 111, 113, 117, 120, 121, 123, 127, 129, 130, 132, 135, 138
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
a(n) - a(n-1) is in {1,2,3,4} for n>=2. Conjecture: a(n)/n -> 9/4.
|
|
|
LINKS
|
Clark Kimberling, Table of n, a(n) for n = 1..10000
|
|
|
EXAMPLE
|
As a word, A284627 = 011010001011010010011010001..., in which 1 is in positions 2,3,5,9,11,...
|
|
|
MATHEMATICA
|
s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0}}] &, {0}, 9] (* A010060 *)
w = StringJoin[Map[ToString, s]]
w1 = StringReplace[w, {"1100" -> "0"}]
st = ToCharacterCode[w1] - 48 (* A284792 *)
Flatten[Position[st, 0]] (* A284820 *)
Flatten[Position[st, 1]] (* A284847 *)
|
|
|
CROSSREFS
|
Cf. A010060, A284792, A284820.
Sequence in context: A174512 A056144 A284626 * A186776 A290475 A191183
Adjacent sequences: A284844 A284845 A284846 * A284848 A284849 A284850
|
|
|
KEYWORD
|
nonn,easy
|
|
|
AUTHOR
|
Clark Kimberling, May 10 2017
|
|
|
STATUS
|
approved
|
| |
|
|
