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

1,1

Comments

Column 5 of A259427

Links

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

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) +10831019*a(n-9) +631423949*a(n-10) -174158787*a(n-11) -4164795233*a(n-12) +1850730317*a(n-13) +16079853013*a(n-14) -9710486208*a(n-15) -36305345879*a(n-16) +26374670314*a(n-17) +47459843513*a(n-18) -38661167718*a(n-19) -35383831131*a(n-20) +31279885514*a(n-21) +14561656988*a(n-22) -13867836147*a(n-23) -3157779772*a(n-24) +3250604408*a(n-25) +358449417*a(n-26) -383837702*a(n-27) -21174776*a(n-28) +20439633*a(n-29) +365875*a(n-30) -355511*a(n-31) +15624*a(n-32)

Example

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

Crossrefs

Cf. A259427

Sequence in context: A255356 A336221 A020408 * A323330 A252403 A252053

Adjacent sequences: A259421 A259422 A259423 * A259425 A259426 A259427

Keyword

nonn

Author

R. H. Hardin, Jun 26 2015

Status

approved