OFFSET
1,1
COMMENTS
Row 7 of A241936.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..96
FORMULA
Empirical: a(n) = (21071/1108800)*n^11 + (544273/1814400)*n^10 + (154375/72576)*n^9 + (38713/4320)*n^8 + (944693/37800)*n^7 + (4201009/86400)*n^6 + (8184077/120960)*n^5 + (12291059/181440)*n^4 + (21852197/453600)*n^3 + (28049/1200)*n^2 + (97403/13860)*n + 1.
EXAMPLE
Some solutions for n=2
..1....1....0....2....2....0....1....1....1....2....2....1....1....1....1....0
..0....0....1....0....1....1....1....1....0....0....0....0....0....1....1....0
..1....1....1....2....0....0....0....0....0....1....1....2....1....0....0....1
..0....0....1....0....1....1....1....0....2....0....0....1....0....2....1....1
..0....1....1....0....0....0....0....1....1....1....0....0....1....0....0....0
..2....1....0....0....1....0....0....0....0....0....0....0....0....0....1....1
..0....1....1....0....0....0....0....2....0....0....0....1....0....1....0....0
..0....0....1....0....0....0....0....1....1....0....0....1....2....1....0....0
..0....0....0....0....1....1....0....0....2....2....2....1....0....0....0....1
..0....0....1....1....2....0....1....0....0....0....0....1....0....0....2....1
..0....1....1....0....1....2....0....1....1....1....2....0....0....0....0....2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 02 2014
STATUS
approved