A214105 Number of 0..2 colorings of a 6X(n+1) array circular in the n+1 direction with new values 0..2 introduced in row major order.

243, 32, 31307, 38880, 6214031, 19920544, 1400634371, 7553900384, 333634652748, 2494628888576, 82026663625611, 764829357599840, 20608425761163112, 224394973731792512, 5262099379377937907, 64035391192104272352

Offset: 1

Author

R. H. Hardin Jul 04 2012

Keywords

• nonn

Comments

Row 6 of A214101

Examples

			Some solutions for n=4
..0..1..0..2..1....0..1..2..0..1....0..1..0..2..1....0..1..2..1..2
..2..0..2..1..0....1..0..1..2..0....2..0..2..1..0....1..2..0..2..0
..1..2..1..0..2....0..1..0..1..2....0..1..0..2..1....2..0..2..0..1
..2..0..2..1..0....1..0..1..2..0....2..0..2..1..0....1..2..1..2..0
..0..1..0..2..1....0..2..0..1..2....0..2..0..2..1....0..1..2..1..2
..1..2..1..0..2....2..1..2..0..1....1..0..1..0..2....1..2..1..2..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = 31*a(n-1) +13*a(n-2) -9267*a(n-3) +78227*a(n-4) +638291*a(n-5) -10708528*a(n-6) +6150128*a(n-7) [phone]*a(n-8) -2033164909*a(n-9) -11904211731*a(n-10) [phone]*a(n-11) [phone]*a(n-12) -1706545467464*a(n-13) [phone]*a(n-14) [phone]*a(n-15) -47889544867794*a(n-16) -117456145818834*a(n-17) [phone]*a(n-18) [phone]*a(n-19) -3290233046207679*a(n-20) +2089968288107233*a(n-21) +12240390785511137*a(n-22) -17809441292578591*a(n-23) -24715178090410237*a(n-24) +65443537376780099*a(n-25) +13041358597027717*a(n-26) -135368827365208891*a(n-27) +55864333777538925*a(n-28) +159221485635535469*a(n-29) -143613070053648912*a(n-30) -91023260463361328*a(n-31) +154989094709985664*a(n-32) [phone]*a(n-33) -84356499484710528*a(n-34) +27208165877275008*a(n-35) +20331945994935040*a(n-36) -12539801202332928*a(n-37) -634009016424448*a(n-38) +1714850626521088*a(n-39) -304729578209280*a(n-40)