|
|
A164438
|
|
Number of binary strings of length n with no substrings equal to 0000 0110 or 0111.
|
|
1
|
|
|
13, 21, 32, 49, 73, 109, 161, 238, 350, 515, 756, 1110, 1628, 2388, 3501, 5133, 7524, 11029, 16165, 23693, 34725, 50894, 74590, 109319, 160216, 234810, 344132, 504352, 739165, 1083301, 1587656, 2326825, 3410129, 4997789, 7324617, 10734750
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
4,1
|
|
LINKS
|
|
|
FORMULA
|
G.f.: -x^4*(-13-8*x+2*x^2+4*x^3+8*x^4) / ( (x-1)*(1+x)*(x^3+x-1) ). - R. J. Mathar, Jan 19 2011
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|