OFFSET
1,1
COMMENTS
Row 3 of A220204
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/403291461126605635584000000)*n^26 - (1/10340806695553990656000000)*n^25 - (1/124089680346647887872000)*n^24 + (1/817455074747351040000)*n^23 - (10039/269760174666625843200000)*n^22 - (199/143413171008307200000)*n^21 + (3959/23580434848481280000)*n^20 - (7187/1429117263544320000)*n^19 - (3063251/99286041467289600000)*n^18 + (3134525899/430239513024921600000)*n^17 - (18293331293/83517081940131840000)*n^16 + (14052701359/9279675771125760000)*n^15 + (927423920085097/10857220652217139200000)*n^14 - (71195294832587/25308206648524800000)*n^13 + (1453021031112971/41758540970065920000)*n^12 + (2941010310311/115037302947840000)*n^11 - (563880275631711089/80669908692172800000)*n^10 + (28582734418296013/271615854182400000)*n^9 - (4249867083162807899/5895108712120320000)*n^8 + (2277798744259856921/1965036237373440000)*n^7 + (412311744610887150719/22516040219904000000)*n^6 - (2333464272159792749359/24392376904896000000)*n^5 - (1203874529306099107997/1870082229375360000)*n^4 + (602265476891826109/59651745753600)*n^3 - (120139113981888058/2153403927675)*n^2 + (13189821894253/83140200)*n - 196824 for n>9
EXAMPLE
Some solutions for n=3
..1..1..1....2..1..1....1..0..0....1..1..1....2..0..0....1..1..1....0..0..0
..3..1..1....3..1..1....3..0..0....2..1..1....1..0..0....2..1..1....0..0..0
..3..3..1....3..2..1....3..1..0....3..3..3....1..0..0....3..3..2....2..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 07 2012
STATUS
approved