A260204 Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00010001

478, 1163, 5291, 20408, 85168, 359112, 1473681, 6100163, 25364416, 104948864, 434706199, 1802333006, 7466572837, 30934888195, 128194824496, 531166886817, 2200852469405, 9119511470498, 37786992254965, 156570849928658

Offset

1,1

Comments

Column 5 of A260207

Links

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

Formula

Empirical: a(n) = a(n-1) +4*a(n-2) +33*a(n-3) +40*a(n-4) -27*a(n-5) -190*a(n-6) -384*a(n-7) +149*a(n-8) +768*a(n-9) +398*a(n-10) -281*a(n-11) +312*a(n-12) -879*a(n-13) -1871*a(n-14) +351*a(n-15) +2551*a(n-16) -928*a(n-17) +499*a(n-18) +267*a(n-19) -947*a(n-20) -295*a(n-21) -55*a(n-22) +284*a(n-23) +192*a(n-24) +136*a(n-25) +98*a(n-26) -86*a(n-27) +17*a(n-28) -4*a(n-29) -19*a(n-30) +3*a(n-31) -12*a(n-32) for n>34

Example

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

Crossrefs

Cf. A260207

Sequence in context: A235083 A252544 A252545 * A119129 A252542 A122268

Adjacent sequences: A260201 A260202 A260203 * A260205 A260206 A260207

Keyword

nonn

Author

R. H. Hardin, Jul 19 2015

Status

approved