OFFSET
1,1
COMMENTS
Column 5 of A231855
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 183*a(n-1) -8008*a(n-2) +164477*a(n-3) -1911762*a(n-4) +13545983*a(n-5) -59779265*a(n-6) +159414566*a(n-7) -218855372*a(n-8) +7532104*a(n-9) +451112826*a(n-10) -590711864*a(n-11) +106059884*a(n-12) +386076754*a(n-13) -374591713*a(n-14) +131217119*a(n-15) +37977619*a(n-16) -86897128*a(n-17) +54663372*a(n-18) -17127366*a(n-19) +3057852*a(n-20) -413220*a(n-21) for n>22
EXAMPLE
Some solutions for n=2
..0..0..0..0..2....0..0..0..1..1....0..2..2..2..2....0..0..0..0..2
..0..0..1..2..2....0..0..1..1..1....1..1..0..0..1....2..1..1..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 14 2013
STATUS
approved