A231260 Number of (n+1)X(5+1) 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order.

12, 211, 5109, 126851, 3130708, 77333664, 1911322499, 47238533054, 1167469879103, 28853204049176, 713087755664766, 17623492910180119, 435552963190637813, 10764403103144565858, 266035096373745526067

Offset: 1

Author

R. H. Hardin, Nov 06 2013

Keywords

• nonn

Comments

Column 5 of A231263

Examples

			Some solutions for n=3
..0..0..0..0..1..1....0..0..1..1..0..0....0..0..0..0..0..0....0..0..0..1..1..1
..0..0..0..1..1..2....0..1..1..0..0..0....0..1..1..0..0..1....0..0..1..1..1..2
..1..1..1..1..2..2....1..0..0..1..1..2....1..1..0..0..1..1....2..2..1..1..2..2
..1..1..1..1..1..1....0..0..1..1..2..2....2..2..2..2..2..2....2..1..1..1..1..1
		

Links

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

Formula

Empirical: a(n) = 69*a(n-1) -2078*a(n-2) +38960*a(n-3) -525899*a(n-4) +5498915*a(n-5) -46432883*a(n-6) [phone]*a(n-7) -1918092860*a(n-8) [phone]*a(n-9) -41987092645*a(n-10) [phone]*a(n-11) -522483149728*a(n-12) [phone]*a(n-13) -3883210245412*a(n-14) [phone]*a(n-15) -17868610021296*a(n-16) [phone]*a(n-17) -52016416190400*a(n-18) [phone]*a(n-19) -96301233124608*a(n-20) [phone]*a(n-21) -111885000085504*a(n-22) [phone]*a(n-23) -78553659015168*a(n-24) [phone]*a(n-25) -30908302295040*a(n-26) [phone]*a(n-27) -5912828837888*a(n-28) [phone]*a(n-29) -410773356544*a(n-30) [phone]*a(n-31) -4294967296*a(n-32)