|
| |
|
|
A013990
|
|
Number of edge-disjoint paths between opposite corners of n X n grid.
|
|
5
|
|
|
|
1, 1, 2, 16, 800, 323632, 1086297184, 30766606427588, 7466577706821521924, 15681997226277809235573754, 286995508313697459220070082104780, 45988915870193885369543805313062149050276
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,3
|
|
|
REFERENCES
|
rec.puzzles Dec 10 1995
|
|
|
LINKS
|
Table of n, a(n) for n=0..11.
|
|
|
CROSSREFS
|
Cf. A013991, A013992, A013993, A013994, A013995, A013996, A013997.
Sequence in context: A012920 A013088 A013137 * A013005 A013000 A013178
Adjacent sequences: A013987 A013988 A013989 * A013991 A013992 A013993
|
|
|
KEYWORD
|
nonn,hard
|
|
|
AUTHOR
|
Dan Hoey
|
|
|
EXTENSIONS
|
a(10) and a(11) from Sean A. Irvine, Sep 24 2018
|
|
|
STATUS
|
approved
|
| |
|
|
