A254223 Number of length 6 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal

0, 2, 6, 136, 192, 1472, 3720, 11182, 16698, 44652, 58174, 129560, 207946, 379126, 471170, 858104, 1025788, 1709908, 2349342, 3507974, 4085852, 6291688, 7972036, 11313026, 14262670, 19396782, 22025082, 31062140, 34653076, 45272262, 55014664

Offset

1,2

Comments

Row 6 of A254218

Links

R. H. Hardin, Table of n, a(n) for n = 1..131

Example

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

Crossrefs

Sequence in context: A359961 A274695 A156515 * A206849 A368395 A090907

Adjacent sequences: A254220 A254221 A254222 * A254224 A254225 A254226

Keyword

nonn

Author

R. H. Hardin, Jan 26 2015

Status

approved