|
| |
|
|
A129185
|
|
Shift operator, left.
|
|
12
|
|
|
|
0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
Let A129185 = M, then M*V (V a vector), shifts V to the left. Example M*V, V = [1, 2, 3, ...] = [2, 3, 4, ...]. A129184 = right shift operator.
|
|
|
LINKS
|
Table of n, a(n) for n=1..97.
Franck Ramaharo, A bracket polynomial for 2-tangle shadows, arXiv:2002.06672 [math.CO], 2020.
|
|
|
FORMULA
|
As an infinite matrix, all 1's in the superdiagonal and the rest zeros.
|
|
|
EXAMPLE
|
First few rows of the matrix:
0, 1;
0, 0, 1;
0, 0, 0, 1;
0, 0, 0, 0, 1;
...
|
|
|
MATHEMATICA
|
Table[PadLeft[{1}, n, 0], {n, 20}]//Flatten//Rest (* Harvey P. Dale, Jul 11 2020 *)
|
|
|
CROSSREFS
|
Cf. A129184, A129186.
Sequence in context: A188020 A179828 A129184 * A283683 A118605 A175253
Adjacent sequences: A129182 A129183 A129184 * A129186 A129187 A129188
|
|
|
KEYWORD
|
nonn,tabf,easy,less
|
|
|
AUTHOR
|
Gary W. Adamson, Apr 01 2007
|
|
|
STATUS
|
approved
|
| |
|
|
