OFFSET
1,1
COMMENTS
Row 5 of A223999
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/86400)*n^10 + (1/5760)*n^9 + (13/3360)*n^8 + (1079/20160)*n^7 + (19031/28800)*n^6 + (35137/5760)*n^5 + (513623/8640)*n^4 + (161053/480)*n^3 + (3838487/2800)*n^2 - (614813/210)*n - 2235 for n>6
EXAMPLE
Some solutions for n=3
..0..2..2....0..0..0....0..0..2....1..1..1....0..2..2....0..0..0....0..0..0
..0..1..2....0..0..1....0..0..0....1..1..1....0..0..2....0..0..2....1..1..2
..0..1..2....0..0..2....0..0..0....1..1..2....0..1..2....1..1..2....0..1..2
..0..1..1....0..2..2....0..1..2....0..2..2....0..0..1....0..1..2....0..0..1
..1..1..2....0..2..2....1..1..1....2..2..2....0..2..2....0..1..1....0..2..2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 30 2013
STATUS
approved