OFFSET
1,1
COMMENTS
Column 4 of A225982
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..76
FORMULA
Empirical: a(n) = (23/14820309504000)*n^17 + (397/2615348736000)*n^16 + (1429/217945728000)*n^15 + (21083/130767436800)*n^14 + (156407/62270208000)*n^13 + (375707/14370048000)*n^12 + (3136061/16765056000)*n^11 + (21563/22861440)*n^10 + (26402329/6096384000)*n^9 + (423919927/18289152000)*n^8 + (68634593/598752000)*n^7 + (144700261/1437004800)*n^6 + (19312991563/12108096000)*n^5 - (22496273857/4540536000)*n^4 + (97668459683/3027024000)*n^3 - (41460631/700700)*n^2 + (20134601/291720)*n - 23 for n>2
EXAMPLE
Some solutions for n=3
..0..0..0..1....0..0..1..1....0..0..1..1....0..0..0..1....0..0..0..1
..0..1..0..1....0..0..0..0....1..0..0..0....1..1..1..0....0..0..0..1
..1..0..1..1....1..0..0..1....0..0..0..1....0..1..0..0....1..1..0..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin May 22 2013
STATUS
approved