OFFSET
1,1
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = 126440*n^2 - 855176*n + 1332608 for n >= 10. - Andrew Howroyd, Jan 02 2023
EXAMPLE
Some solutions for 5 X 5:
0 1 0 0 0 2 0 0 0 0 0 0 0 1 0 2 0 0 0 0
0 0 0 0 0 0 0 3 0 0 3 6 0 0 0 0 0 1 0 0
0 5 2 0 0 0 1 6 0 0 0 0 2 5 0 0 3 6 0 0
7 0 0 4 0 0 4 0 0 0 0 4 7 0 0 0 0 0 4 7
0 3 6 0 0 0 7 0 5 0 0 0 0 0 0 0 5 0 0 0
PROG
(PARI) row(7, 30) \\ row(m, n) defined in A186851. - Andrew Howroyd, Jan 02 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 27 2011
EXTENSIONS
Terms a(11) and beyond from Andrew Howroyd, Jan 02 2023
STATUS
approved