A259424 Number of (n+1)X(5+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0011 or 0111.

1549, 43347, 1172659, 32060569, 873754597, 23840819225, 650266054724, 17738788220867, 483879193637566, 13199512190239893, 360061200620900555, 9821906273427713517, 267926042549856960624, 7308600191006157186258

Offset: 1

Author

R. H. Hardin, Jun 26 2015

Keywords

• nonn

Comments

Column 5 of A259427

Examples

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

Links

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

Crossrefs

Cf. A259427

Formula

Empirical: a(n) = 17*a(n-1) +441*a(n-2) -2594*a(n-3) -55555*a(n-4) +94770*a(n-5) +2585643*a(n-6) -1145599*a(n-7) -55087536*a(n-8) [phone]*a(n-9) [phone]*a(n-10) -174158787*a(n-11) -4164795233*a(n-12) [phone]*a(n-13) [phone]*a(n-14) -9710486208*a(n-15) -36305345879*a(n-16) [phone]*a(n-17) [phone]*a(n-18) -38661167718*a(n-19) -35383831131*a(n-20) [phone]*a(n-21) [phone]*a(n-22) -13867836147*a(n-23) -3157779772*a(n-24) [phone]*a(n-25) [phone]*a(n-26) -383837702*a(n-27) -21174776*a(n-28) [phone]*a(n-29) +365875*a(n-30) -355511*a(n-31) +15624*a(n-32)