A248485 Number of length n+5 0..4 arrays with some three disjoint pairs in each consecutive six terms having the same sum

2125, 2605, 3301, 4285, 5641, 7465, 9865, 14005, 19945, 28315, 39895, 55615, 76555, 112435, 163723, 235909, 335791, 471475, 652375, 962455, 1405447, 2028817, 2891329, 4063045, 5625325, 8303485, 12129433, 17513101, 24962017, 35081305

Offset

1,1

Comments

Column 4 of A248489

Links

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

Formula

Empirical: a(n) = a(n-1) +11*a(n-6) -11*a(n-7) -23*a(n-12) +23*a(n-13) +24*a(n-18) -24*a(n-19) -15*a(n-24) +15*a(n-25) +6*a(n-30) -6*a(n-31) -a(n-36) +a(n-37)

Example

Some solutions for n=6
..0....4....2....1....3....1....0....2....0....4....2....2....2....3....0....4
..1....1....1....2....3....1....4....3....1....0....4....2....4....2....4....0
..4....3....3....0....3....2....2....4....2....1....3....1....1....1....3....1
..3....2....4....4....3....0....1....1....4....3....4....3....3....1....2....3
..2....2....2....2....4....2....3....2....2....2....3....3....3....2....1....3
..2....3....3....3....2....3....2....3....3....2....2....4....2....3....2....1
..3....1....2....1....3....1....0....2....3....1....2....2....2....3....3....4
..1....4....1....2....3....4....1....0....1....3....4....2....4....2....4....0
..4....3....0....0....3....2....2....1....2....1....3....1....1....1....3....1
..3....2....4....1....3....3....1....1....1....0....1....0....0....4....2....3
..2....2....2....2....4....2....0....2....2....2....0....3....3....2....1....3

Crossrefs

Sequence in context: A263510 A250970 A238035 * A321117 A337644 A278552

Adjacent sequences: A248482 A248483 A248484 * A248486 A248487 A248488

Keyword

nonn

Author

R. H. Hardin, Oct 07 2014

Status

approved