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A254197 Number of length n 1..(1+2) arrays with no leading or trailing partial sum equal to a prime 1
1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 2, 14, 66, 156, 202, 151, 69, 18, 7, 19, 37, 78, 393, 2608, 12865, 45917, 121659, 245151, 393062, 565673, 910088, 1775336, 3503048, 5974259, 8372896, 9844151, 11328144, 18364097, 44444934, 112695335, 249504498 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,14

COMMENTS

Column 1 of A254204

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..66

EXAMPLE

All solutions for n=15

..1....1....1....1....1....1....1....1....1....1....1....1....1....1

..3....3....3....3....3....3....3....3....3....3....3....3....3....3

..2....2....2....2....2....2....2....2....2....2....2....2....2....2

..3....2....3....3....3....3....3....3....3....3....2....3....3....3

..3....2....3....1....3....3....3....3....3....3....1....3....3....3

..3....2....3....2....3....3....2....3....3....2....3....3....3....2

..1....3....3....3....3....3....1....3....3....2....3....3....3....2

..2....3....3....3....3....2....3....3....2....2....3....3....3....2

..3....3....3....3....3....1....3....3....2....3....3....1....3....2

..3....3....2....3....3....3....3....2....2....3....3....2....3....2

..3....3....1....3....3....3....3....2....3....3....3....3....1....3

..3....3....3....3....3....3....3....2....3....3....3....3....2....3

..2....2....2....2....2....2....2....2....2....2....2....2....2....2

..3....3....3....3....3....3....3....3....3....3....3....3....3....3

..1....1....1....1....1....1....1....1....1....1....1....1....1....1

CROSSREFS

Sequence in context: A335630 A266590 A196977 * A222715 A197162 A109869

Adjacent sequences:  A254194 A254195 A254196 * A254198 A254199 A254200

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 26 2015

STATUS

approved

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Last modified May 14 19:53 EDT 2021. Contains 343903 sequences. (Running on oeis4.)