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A255719 Number of length 4 1..(n+2) arrays with no leading partial sum equal to a prime and no consecutive values equal 1

%I #4 Mar 03 2015 12:21:43

%S 1,6,21,81,120,342,653,1221,1729,3037,3884,6136,8650,12056,14580,

%T 20505,24083,32191,40684,51184,58455,74807,90133,110175,130476,155925,

%U 173529,209720,230413,269673,310187,358492,408861,473591,512204,582744,654517

%N Number of length 4 1..(n+2) arrays with no leading partial sum equal to a prime and no consecutive values equal

%C Row 4 of A255716

%H R. H. Hardin, <a href="/A255719/b255719.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..6....6....4....6....1....4....6....4....4....6....1....6....6....6....4....6

%e ..3....2....2....4....5....6....2....2....5....4....3....2....2....2....2....2

%e ..5....1....3....5....6....4....4....6....3....6....2....6....6....1....4....4

%e ..2....5....1....1....2....6....6....2....6....4....3....1....4....6....5....2

%Y Cf. A255716

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 03 2015

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)