A259891 Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00000011

936, 4662, 40435, 202632, 863502, 5055255, 28982771, 144514845, 753909576, 4156538339, 22079571360, 115439403732, 616985118609, 3302552685297, 17486869963737, 92800385304502, 494726612194783, 2631317292421710

Offset

1,1

Comments

Column 5 of A259894

Links

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

Formula

Empirical: a(n) = 3*a(n-1) +70*a(n-3) +98*a(n-4) -298*a(n-5) -1036*a(n-6) -4342*a(n-7) -5835*a(n-8) +18804*a(n-9) +43980*a(n-10) +85735*a(n-11) +63577*a(n-12) -270285*a(n-13) -458233*a(n-14) -652872*a(n-15) -379824*a(n-16) +1159084*a(n-17) +1605003*a(n-18) +2054380*a(n-19) +1513808*a(n-20) -1410493*a(n-21) -1630016*a(n-22) -2053913*a(n-23) -1770221*a(n-24) +1119731*a(n-25) +729077*a(n-26) +791754*a(n-27) +960600*a(n-28) -495745*a(n-29) -205791*a(n-30) -131111*a(n-31) -258913*a(n-32) +87189*a(n-33) +32170*a(n-34) +3190*a(n-35) +29291*a(n-36) -3273*a(n-37) -1398*a(n-38) +236*a(n-39) -1078*a(n-40) +41*a(n-41) -10*a(n-42) -5*a(n-43) +8*a(n-44)

Example

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

Crossrefs

Cf. A259894

Sequence in context: A278186 A120810 A027554 * A282382 A282546 A206843

Adjacent sequences: A259888 A259889 A259890 * A259892 A259893 A259894

Keyword

nonn

Author

R. H. Hardin, Jul 07 2015

Status

approved