|
| |
|
|
A264221
|
|
Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,0 0,1 1,0 -1,0 or 0,-2.
|
|
1
|
|
|
|
64, 3610, 97520, 2407816, 68008846, 1883268032, 51345531360, 1411162065495, 38813397148320, 1066027094762736, 29288688616590792, 804848533573703464, 22115072006086377880, 607663815006822489585, 16697331537936058632432
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=3
..0..3..1..2....0..1..2..7....4..5..6..3....2..0..1..3....2..0..1..7
..8..7..5.11....6..4..5..3....0..1..2..7....4..9..6.11....8..9..6..3
..4..9..6.10....8..9.10.15....8.11..9.10....8..5.10..7....4..5.10.11
.12.15.13.14...16.13.18.11...16.15.13.14...16.17.14.15...14.13.18.19
.16.17.18.19...12.17.14.19...12.17.18.19...12.13.18.19...12.16.17.15
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
