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A254941 Number of length n 1..(2+1) arrays with every leading partial sum divisible by 2, 3, 5, 7 or 11 1

%I #4 Feb 10 2015 20:00:47

%S 2,6,18,54,148,342,705,1326,2326,4173,8361,18604,41296,85118,169747,

%T 352477,758153,1594105,3165858,5975091,11145201,21712333,45705877,

%U 102683622,237061239,543357180,1209463533,2598223818,5445429743

%N Number of length n 1..(2+1) arrays with every leading partial sum divisible by 2, 3, 5, 7 or 11

%C Column 2 of A254947

%H R. H. Hardin, <a href="/A254941/b254941.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..3....3....3....2....2....2....2....2....2....2....2....3....3....3....3....3

%e ..2....3....3....1....2....1....3....3....2....1....1....2....1....3....3....1

%e ..3....2....3....3....1....2....1....2....3....1....2....1....2....2....1....1

%e ..2....3....1....2....3....2....3....2....1....3....3....3....2....1....3....3

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 10 2015

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)