A232339 Number of 5Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal

1, 110, 1282, 3472, 38986, 117690, 1274656, 4158066, 42080048, 146531864, 1393415694, 5138181574, 46239884144, 179337779938, 1537326888338, 6234688975144, 51199303984118, 216023027477120, 1707858843212112

Offset

1,2

Comments

Row 5 of A232335

Links

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

Formula

Empirical: a(n) = a(n-1) +32*a(n-2) -17*a(n-3) -3*a(n-4) -162*a(n-5) -178*a(n-6) +240*a(n-7) -47*a(n-8) +1633*a(n-9) -1527*a(n-10) +1816*a(n-11) -5806*a(n-12) +4608*a(n-13) -5834*a(n-14) +12194*a(n-15) -8388*a(n-16) +10308*a(n-17) -17052*a(n-18) +9996*a(n-19) -11795*a(n-20) +16635*a(n-21) -7989*a(n-22) +9086*a(n-23) -11378*a(n-24) +4230*a(n-25) -4661*a(n-26) +5307*a(n-27) -1415*a(n-28) +1514*a(n-29) -1589*a(n-30) +269*a(n-31) -279*a(n-32) +272*a(n-33) -22*a(n-34) +22*a(n-35) -20*a(n-36) for n>42

Example

Some solutions for n=5
..0..1..0..1..0....2..1..2..1..2....0..1..2..1..0....1..2..0..1..2
..2..1..2..1..2....2..1..0..1..0....2..1..2..1..2....0..1..2..0..2
..0..1..0..1..0....0..2..0..1..0....2..1..2..1..0....2..0..1..0..1
..0..1..2..1..2....0..1..2..1..0....2..1..0..1..2....1..2..1..2..1
..0..1..2..1..2....2..1..2..1..2....2..1..0..1..2....1..2..1..0..2

Crossrefs

Sequence in context: A232781 A248468 A231967 * A358256 A200877 A205348

Adjacent sequences: A232336 A232337 A232338 * A232340 A232341 A232342

Keyword

nonn

Author

R. H. Hardin, Nov 22 2013

Status

approved