|
|
|
|
1, 3, 6, 7, 9, 12, 13, 16, 17, 19, 21, 24, 25, 27, 30, 31, 34, 35, 37, 39, 42, 43, 46, 47, 49, 51, 54, 55, 57, 60, 61, 63, 66, 67, 70, 71, 73, 75, 78, 79, 81, 84, 85, 88, 89, 91, 93, 96, 97, 100, 101, 103, 105, 108, 109, 111, 114, 115, 117, 120, 121, 124
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
LINKS
|
|
|
FORMULA
|
2n - a(n ) = A189628(n) for n >= 1.
|
|
EXAMPLE
|
As a word, A284878 = 010110..., in which 0 is in positions 1,3,6,7,...
|
|
MATHEMATICA
|
s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {0, 1, 1, 0}}] &, {0}, 7] (* A284878 *)
Flatten[Position[s, 0]] (* A284879 *)
Flatten[Position[s, 1]] (* A284880 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|