|
|
A251563
|
|
Number of (n+1)X(2+1) 0..7 arrays with every 2X2 subblock summing to a prime
|
|
1
|
|
|
29476, 1720558, 100477236, 5871247808, 343048858208, 20045964354544, 1171337430239996, 68446666138149356, 3999583528286507728, 233714398039230477280, 13656851668945938218858, 798035184976562913518324
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
FORMULA
|
Empirical recurrence of order 83 (see link above)
|
|
EXAMPLE
|
Some solutions for n=1
..0..2..4....4..7..2....2..7..7....3..7..3....0..3..4....7..1..5....7..1..1
..1..2..5....1..5..3....0..2..1....1..6..1....1..3..7....1..2..3....5..4..7
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|