A254208 Number of length 5 1..(n+2) arrays with no leading or trailing partial sum equal to a prime

1, 11, 21, 176, 204, 898, 1653, 4078, 5075, 11512, 13456, 25925, 37275, 60717, 69689, 114352, 127928, 195039, 251161, 349001, 385157, 552907, 667293, 892038, 1075280, 1385235, 1510110, 2006079, 2156703, 2694466, 3157069, 3885393, 4484057, 5564130

Offset

1,2

Comments

Row 5 of A254204

Links

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

Example

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

Crossrefs

Sequence in context: A321509 A034922 A015446 * A083177 A110466 A110383

Adjacent sequences: A254205 A254206 A254207 * A254209 A254210 A254211

Keyword

nonn

Author

R. H. Hardin, Jan 26 2015

Status

approved