A206219 Number of (n+1)X5 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing

8128, 656053, 35625711, 1827047303, 74479700228, 2537225006229, 77008927829374, 2231343350258712, 64389782469709783, 1877157827258522194, 55170332039640610650, 1627763387646380404023, 48095430422740484129183

Offset

1,1

Comments

Column 4 of A206223

Links

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

Formula

Empirical: a(n) = 103*a(n-1) -4219*a(n-2) +81147*a(n-3) -397332*a(n-4) -14503310*a(n-5) +329978018*a(n-6) -2633737466*a(n-7) -4621703737*a(n-8) +283589064843*a(n-9) -2411136838927*a(n-10) +4991691652703*a(n-11) +67278935952078*a(n-12) -620599579539428*a(n-13) +1749152997998376*a(n-14) +5269824026917280*a(n-15) -59102318926312640*a(n-16) +172656732006803840*a(n-17) +92541855223544832*a(n-18) -2145453207148177664*a(n-19) +5848239068991970816*a(n-20) -854981061398701056*a(n-21) -32533098292024866816*a(n-22) +77324864401822253056*a(n-23) -26377215092523335680*a(n-24) -203801804660199915520*a(n-25) +404090179964000272384*a(n-26) -172703174480063627264*a(n-27) -423971470763460919296*a(n-28) +707497817831859290112*a(n-29) -362831080049269014528*a(n-30) -75679024184612093952*a(n-31) +150854984897157660672*a(n-32) -44931349155019751424*a(n-33) for n>51

Example

Some solutions for n=4
..0..0..2..2..1....2..2..0..0..1....2..1..1..1..2....1..1..0..2..0
..0..0..0..0..0....1..0..0..0..2....2..0..0..0..1....0..0..0..0..0
..1..2..1..0..2....1..0..1..0..2....1..0..0..2..0....0..2..1..2..0
..0..0..0..0..2....1..2..1..0..2....2..0..0..1..2....0..0..0..0..0
..1..2..1..0..2....0..2..2..0..0....0..2..0..1..2....0..0..1..1..0

Crossrefs

Sequence in context: A147633 A237145 A205211 * A231862 A088846 A092208

Adjacent sequences: A206216 A206217 A206218 * A206220 A206221 A206222

Keyword

nonn

Author

R. H. Hardin Feb 04 2012 2012

Status

approved