A215193 Number of arrays of 6 0..n integers with no sum of consecutive elements equal to a disjoint adjacent sum of an equal number of elements.

0, 30, 440, 2898, 11756, 36864, 95832, 219092, 452368, 864810, 1551080, 2642774, 4310012, 6776612, 10320160, 15292160, 22115896, 31311374, 43491392, 59391706, 79863756, 105911744, 138681424, 179503444, 229878952, 291529666, 366378408

Offset

1,2

Comments

Row 6 of A215190

Links

R. H. Hardin, Table of n, a(n) for n = 1..135

Formula

Empirical: a(n) = 2*a(n-1) +a(n-2) -2*a(n-3) -2*a(n-4) -2*a(n-5) +5*a(n-6) +2*a(n-7) -2*a(n-9) -5*a(n-10) +2*a(n-11) +2*a(n-12) +2*a(n-13) -a(n-14) -2*a(n-15) +a(n-16)

Example

Some solutions for n=6
..4....4....4....4....1....6....6....4....1....4....6....6....0....1....1....0
..3....0....5....3....4....0....0....2....4....5....5....3....2....0....0....3
..2....6....2....2....5....1....3....1....3....1....1....6....5....6....1....0
..3....1....4....4....1....3....6....3....5....5....2....4....6....0....5....4
..6....3....0....0....3....2....1....4....3....0....3....1....5....5....6....5
..4....5....4....3....2....0....4....2....4....3....2....5....2....3....3....4

Crossrefs

Sequence in context: A010946 A022625 A125465 * A163130 A280856 A281602

Adjacent sequences: A215190 A215191 A215192 * A215194 A215195 A215196

Keyword

nonn

Author

R. H. Hardin, Aug 05 2012

Status

approved