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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

%I #4 Jan 26 2015 20:43:40

%S 0,1,1,4,4,11,16,23,23,34,34,47,58,73,73,92,92,113,130,149,149,178,

%T 197,226,249,278,278,315,315,348,377,414,447,490,490,531,568,613,613,

%U 666,666,715,758,809,809,870,917,978,1029,1086,1086,1155,1206,1275,1330,1393

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

%C Row 2 of A254204

%H R. H. Hardin, <a href="/A254205/b254205.txt">Table of n, a(n) for n = 1..210</a>

%e All solutions for n=4

%e ..6....4....6....4

%e ..4....4....6....6

%K nonn

%O 1,4

%A _R. H. Hardin_, Jan 26 2015

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Last modified March 29 03:41 EDT 2024. Contains 371264 sequences. (Running on oeis4.)