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A254205 Number of length 2 1..(n+2) arrays with no leading or trailing partial sum equal to a prime 1
0, 1, 1, 4, 4, 11, 16, 23, 23, 34, 34, 47, 58, 73, 73, 92, 92, 113, 130, 149, 149, 178, 197, 226, 249, 278, 278, 315, 315, 348, 377, 414, 447, 490, 490, 531, 568, 613, 613, 666, 666, 715, 758, 809, 809, 870, 917, 978, 1029, 1086, 1086, 1155, 1206, 1275, 1330, 1393 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Row 2 of A254204

LINKS

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

EXAMPLE

All solutions for n=4

..6....4....6....4

..4....4....6....6

CROSSREFS

Sequence in context: A327684 A231064 A302516 * A048223 A214112 A211950

Adjacent sequences:  A254202 A254203 A254204 * A254206 A254207 A254208

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 26 2015

STATUS

approved

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Last modified July 15 02:31 EDT 2020. Contains 335762 sequences. (Running on oeis4.)