|
| |
|
|
A059680
|
|
Triangle T(n,k) read by rows giving number of fixed 4 X k polyominoes with n cells (n >= 4, 1<=k<=n-3).
|
|
0
| |
|
|
1, 0, 12, 0, 18, 50, 0, 8, 154, 120, 0, 1, 212, 584, 230, 0, 0, 158, 1396, 1526, 388, 0, 0, 62, 2038, 5154, 3276, 602
(list; table; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 4,3
|
|
|
REFERENCES
| R. C. Read, Contributions to the cell growth problem, Canad. J. Math., 14 (1962), 1-20.
|
|
|
EXAMPLE
| 1; 0,12; 0,18,50; 0,8,154,120; ...
|
|
|
CROSSREFS
| Sequence in context: A199542 A048730 A156390 * A077351 A119530 A012332
Adjacent sequences: A059677 A059678 A059679 * A059681 A059682 A059683
|
|
|
KEYWORD
| nonn,easy,nice,tabl
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Feb 05 2001
|
| |
|
|
