OFFSET
1,1
COMMENTS
Column 2 of A234982
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 24*a(n-1) +64*a(n-2) -3343*a(n-3) +3560*a(n-4) +161202*a(n-5) -330230*a(n-6) -3637984*a(n-7) +8745716*a(n-8) +44091426*a(n-9) -112181033*a(n-10) -308357502*a(n-11) +798959758*a(n-12) +1293974001*a(n-13) -3329862899*a(n-14) -3350818614*a(n-15) +8265499178*a(n-16) +5548074149*a(n-17) -12222886511*a(n-18) -6121346759*a(n-19) +10583216048*a(n-20) +4613111977*a(n-21) -5146894678*a(n-22) -2277079715*a(n-23) +1263969238*a(n-24) +653512844*a(n-25) -105006895*a(n-26) -86462636*a(n-27) -6362555*a(n-28) +2338008*a(n-29) +347574*a(n-30) +7596*a(n-31)
EXAMPLE
Some solutions for n=2
..0..3..4....2..2..4....2..0..1....4..4..4....0..0..0....2..2..4....4..1..4
..2..4..1....4..0..2....2..4..2....4..0..4....2..4..4....4..0..3....4..0..4
..0..3..0....3..1..4....0..0..0....3..3..3....1..0..0....1..0..4....3..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 02 2014
STATUS
approved